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It applies to lightweight heat-insulating refractory and highly refractory products: dinas, fireclay, mullite-silica, mullite and corundum with an apparent density of not more than 1.3 g / cm3.

• Replaces GOST 5040-78 “Lightweight products - heat-insulating refractory and highly refractory. Specifications” IUS 4-2000
• Replaced by GOST 5040-2015 “Heat-resistant refractory products. Specifications" IUS 3-2016

Reissue

1 area of ​​use

4 Shape and dimensions

5 Technical requirements

6 Safety and environmental requirements

7 Acceptance rules

8 Test methods

9 Marking, packaging, transport and storage

Annex A (informative) Conversion of 1 ton of mass of products into volume units

This GOST is in:

Organizations:

Lightweight heatinsulating refractory and high - refractory products. Specifications

• GOST 2211-65Refractories and refractory raw materials. Methods for determining density
• GOST 8691-73Refractory products for general purposes. Shape and dimensions. Replaced by GOST 8691-2018.
• GOST 5244-79Wood shavings. Specifications
• GOST 12.0.001-82Key points
• GOST 12.0.003-74System of labor safety standards. Dangerous and harmful production factors. Classification. Replaced by GOST 12.0.003-2015.
• GOST 12.1.005-88System of labor safety standards. General sanitary and hygienic requirements for the air of the working area
• GOST 17.0.0.01-76Standards system in the field of nature protection and improvement of the use of natural resources. Key points
• GOST 17.2.3.02-78Protection of Nature. Atmosphere. Rules for Establishing Permissible Emissions of Harmful Substances by Industrial Enterprises. Replaced by GOST 17.2.3.02-2014.
• GOST 10198-91Wooden boxes for goods weighing St. 200 to 20000 kg. General specifications
• GOST 166-89Calipers. Specifications
• GOST 2642.0-86Refractories and refractory raw materials. General requirements for methods of analysis. Replaced by GOST 2642.0-2014.
• GOST 427-75Metal measuring rulers. Specifications
• GOST 24717-94Refractories and refractory raw materials. Marking, packaging, storage and transportation. Replaced by GOST 24717-2004.
• GOST 8273-75Wrapping paper. Specifications
• GOST 24597-81Packages of packaged goods. Main parameters and dimensions
• GOST 12.4.028-76System of labor safety standards. Respirators ShB-1 "Petal". Specifications
• GOST 2642.3-97silicon (IV). Replaced by GOST 2642.3-2014.
• GOST 2642.5-97Refractories and refractory raw materials. Methods for determination of oxide iron (III). Replaced by GOST 2642.5-2016.
• GOST 2642.4-97Refractories and refractory raw materials. Methods for determination of oxide aluminum . Replaced by GOST 2642.4-2016.
• GOST 12.4.041-2001System of labor safety standards. Means of individual protection of respiratory organs filtering. General technical requirements
• GOST 9347-74Gasketboard and sealing gaskets from it. Specifications
• GOST 10905-86Calibration and marking plates. Specifications
• GOST 12170-85Refractories. Stationary method for measuring thermal conductivity
• GOST 15136-78Products refractory. Method for measuring the depth of broken corners and ribs
• GOST 20901-75masonry of air heaters and air ducts of hot blast of blast furnaces. Specifications. Replaced by GOST 20901-2016.
• GOST 21436-75Refractory and highly refractory products for linings of rotary kilns. Specifications. Replaced by GOST 21436-2004.
• GOST 24468-80Products refractory. Method for determining the apparent density and total porosity of thermal insulation products
• GOST 25706-83Loupes. Types, basic parameters. General technical requirements
• GOST 2991-85Wooden non-separable boxes for loads weighing up to 500 kg. General specifications
• GOST 4071.2-94Refractory products heat-insulating. Method for determining the compressive strength at room temperature
• GOST 6024-75Refractory products dinas and fireclay for laying open-hearth furnaces. Shape and dimensions
• GOST 8074-82Instrumental microscopes. Types, basic parameters and sizes. Technical requirements
• GOST 8179-98Products refractory. Sampling and acceptance testing
• GOST 5402.1-2000Refractory products with a total porosity of less than 45%. Method for determining residual dimensional changes during heating
• GOST 5402.2-2000Refractory products heat-insulating. Method for determining residual dimensional changes during heating
• GOST 5040-78Products lightweight - heat-insulating refractory and highly refractory. Specifications. Replaced by GOST 5040-96.

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INTERSTATE STANDARD

refractory products
AND HIGHLY REFRACTORY
LIGHTWEIGHT
HEAT INSULATION

Specifications

INTERSTATE COUNCIL
ON STANDARDIZATION, METROLOGY AND CERTIFICATION

Minsk

Foreword

1 DEVELOPED by the Ukrainian State Research Institute of Refractories (UkrNIIO)

INTRODUCED by the State Committee of Ukraine for Standardization, Metrology and Certification

2 ADOPTED by the Interstate Council for Standardization, Metrology and Certification (Minutes No. 10 dated 03.10.96)

3 By Decree of the State Committee of the Russian Federation for Standardization and Metrology dated December 15, 1999 No. 513-st, the interstate standard GOST 5040-96 was put into effect directly as the state standard of the Russian Federation from July 1, 2000.

INTERSTATE STANDARD

LIGHTWEIGHT REFRACTORY AND HIGHLY REFRACTORY PRODUCTS
HEAT INSULATION

Specifications

Lightweight heat insulating refractory
and high-refractory products.
Specifications

Introduction date 2000-07-01

1 area of ​​use

This standard applies to lightweight heat-insulating refractory and highly refractory products: dinas, fireclay, mullite-silica, mullite and corundum with an apparent density of not more than 1.3 g / cm 3.

Lightweight heat-insulating products are used in the working (unprotected) lining of furnaces that are not subject to the action of melts, abrading forces and mechanical shocks, or in intermediate (protected) insulation.

2 Normative references

3 - 12, 17, 22, 23, 25 - 28, 29, 35, 36, 42 - 45, 47 - 51

SHLA - 1.3; SL-1.3; ShL-1.0

4 - 12, 17, 22, 23, 25 - 28, 35, 36, 42 - 45, 47 - 51, 55 - 59, 83, 103 - 109

SHKL-1.3; ShTL-0.6

5, 7, 8, 22, 23, 44, 45, 47

SL-0.9; SL-0.4; SHL1-0.4

1, 2, 5, 7, 8, 17, 22, 23,44,45, 47

1, 2, 4, 8, 11 - 14, 18 - 19

3 - 12, 17, 22, 23, 25 - 28, 35, 36, 42 - 45, 47 - 51

CL-1.3; CL-1.1

4.2 Limit deviations in product dimensions must correspond to those indicated in table 3.

Table 3 - Limit deviations in the dimensions of lightweight products

In millimeters

4.3 Additional shapes and sizes of products, as well as maximum deviations in size, can be set by agreement of the parties.

5 Technical requirements

5.1 In terms of physical and chemical parameters, lightweight products must comply with the requirements specified in Table 4, with the following additions.

5.1.1 For products of all brands, the apparent density may deviate upward by 0.1 g/cm 3 for one product out of three.

5.1.2 For products of all grades, except ShL-0.4 and ShL1-0.4, having overall dimensions of more than 250 mm ´ 124 mm ´ 75 mm, a decrease in compressive strength by 0.5 N/mm 2 is allowed.

Table 4 - Physical and chemical parameters of lightweight products

5.2 In terms of appearance, the products must meet the requirements specified in Table 5.

5.3 On the fracture surface of products are not allowed: for grades ShL-0.4 and ShL1-0.4 - cracks with a width of more than 2 mm and a length of more than 60 mm, voids and foreign inclusions larger than 20 mm, for other grades - cracks with a width of more than 2 mm and more than 30 mm long, foreign inclusions and voids larger than 10 mm.

6 Safety and environmental requirements

6.1 In the production and use of lightweight dinas products, a harmful production factor is inorganic quartzite dust containing silicon oxide, which belongs to the 3rd hazard class. The maximum permissible concentration (MAC) of quartzite dust in the air of the working area of ​​industrial premises should not exceed 1 mg/m 3 (GOST 12.1.005).

6.2 In the production and use of fireclay, mullite-silica, mullite and corundum lightweight products, a harmful production factor is inorganic dust containing aluminum oxide with an admixture of free silicon dioxide and iron oxide, which belongs to the fourth hazard class. MPC of the specified dust in the air of the working area of ​​industrial premises should not exceed 6 mg / m 3 (GOST 12.1.005, GOST 17.2.3.02.

Table 5 - Indicators of the appearance of lightweight products

In millimeters

7 Acceptance rules

7.1 Rules for acceptance of products - according to GOST 8179 with the following additions.

7.1.1 The mass of a batch of lightweight products is set in volume units for all brands no more than 80 m 3, for products of the ShTL-0.6, ShL-0.4 and ShL1-0.4 brands - no more than 25 m 3. The conversion of the mass of products into volume units is indicated in Appendix A.

7.1.2 For the acceptance of mass-produced products, control plan number one is used, for critical products - number two.

7.1.3 In terms of appearance and size in the sample, one defective sample is allowed for products with an apparent density of more than 1.0 g / cm 3, for products with an apparent density of less than 1.0 g / cm 3 - two defective samples.

7.1.4 When checking the conformity of the quality of products with the requirements of this standard, acceptance tests are carried out with the frequency of sampling and sampling to determine: appearance indicators, apparent density, compressive strength - from each lot, other indicators - from every third lot.

8 Test methods

8.1 The mass fraction of Al 2 O 3, Fe 2 O 3, SiO 2 is determined according to GOST 2642.0, GOST 2642.4,

8.3 Additional linear shrinkage or growth when holding products for 2 hours is determined according to GOST 5402.

8.4 The compressive strength is determined according to GOST 4071.2.

If cracks are found on the sample intended for determining the compressive strength, the sample can be replaced from the same sample no more than two times. If, after a double replacement, the sample has a crack on the cut, the structure of the batch products in the fracture is re-checked on a double number of samples.

8.5 Thermal conductivity is determined according to GOST 12170.

The probe must not enter the gap between the plate and the product.

8.9 The depth of the broken corners and ribs is determined according to GOST 15136.

8.10 The width of the cracks is determined using a measuring magnifier according to GOST 25706 or an instrumental microscope according to GOST 8074. The magnifying glass is positioned so that its scale is perpendicular to the crack. A strip of white paper is placed between the scale and the surface of the products, which is placed along the scale close to its division. The width of the crack is determined in the place of maximum value.

The length of the crack is measured with a metal ruler with a division value of 1 mm.

8.11 The diameter of melts, voids and foreign inclusions is determined with a metal ruler with a division value of 1 mm in the place of their maximum value. The diameter of the melts is measured by the diameter of the cavity formed by the melt.

9 Marking, packaging, transport and storage

9.1 Marking, packaging, transportation and storage of products is carried out in accordance with GOST 24717 with the following additions.

9.1.1 For products of grades ShL-0.9, ShTL-0.6, ShL-0.4, ShL1-0.4, MKRL-0.8, KL-1.3 and KL-1.1, manufactured by the foam method and casting, when wrapping them in paper or loading them into boxes, containers, bags and pallets, the marking is applied not to products, but to packaging or containers.

9.1.2 Products of all brands are packed in packages according to GOST 24717 or boxes according to

9.2 Packaging, transportation and storage of products may be carried out by agreement of the parties, provided that the performance of the products is guaranteed.

APPENDIX A

(reference)

Converting 1 ton of mass of products into volume units

Table A.1

Keywords: refractory, highly refractory, lightweight, heat-insulating products

Interstate standard GOST 5040-2015

"FIRE-RESISTANT AND HEAT-INSULATING PRODUCTS. SPECIFICATIONS"

(put into effect by order of the Federal Agency for Technical Regulation and Metrology of August 3, 2015 N 1062-st)

Heat insulating refractor products. Specifications

Instead of GOST 5040-96

Foreword

The goals, basic principles and basic procedure for carrying out work on interstate standardization are established by GOST 1.0-92 "Interstate standardization system. Basic provisions" and GOST 1.2-2009 "Interstate standardization system. Interstate standards, rules and recommendations for interstate standardization. Rules for the development, adoption, application, renewal and cancellation

About the standard

Developed by the Limited Liability Company "Scientific and Technical Center "Refractories" (LLC "NTC "Refractories")

2 Introduced by the Technical Committee for Standardization TK 009 "Refractories"

3 Adopted by the Interstate Council for Standardization, Metrology and Certification (Minutes of June 18, 2015 N 47)

4 By order of the Federal Agency for Technical Regulation and Metrology dated August 3, 2015 N 1062-st, the interstate standard GOST 5040-2015 was put into effect as the national standard of the Russian Federation from April 1, 2016.

5 Instead of GOST 5040-96

1 area of ​​use

This standard applies to refractory heat-insulating products (hereinafter referred to as products) with a total porosity of 45% or more, determined in accordance with GOST 24468.

Heat-insulating products are used in the intermediate (protected) lining layer or in the working (unprotected) lining of thermal units, which is not exposed to melts, aggressive gaseous media, abrasive forces, mechanical shocks.

This standard does not apply to thermally insulating fibrous refractory products and thermally insulating refractory concrete products.

2 Normative references

GOST 12.0.001-82*(1) Occupational safety standards system. Key points

GOST 12.0.003-74 Occupational safety standards system. Dangerous and harmful production factors. Classification

GOST 12.1.005-88 System of labor safety standards. General sanitary and hygienic requirements for the air of the working area

GOST 12.3.009-76 Occupational safety standards system. Loading and unloading works. General safety requirements

GOST 12.4.028-76 Occupational safety standards system. Respirators ShB-1 "Petal". Specifications

GOST 12.4.041-2001 Occupational safety standards system. Means of individual protection of respiratory organs filtering. General technical requirements

GOST 17.0.0.01-76 System of standards in the field of nature protection and improvement of the use of natural resources. Key points

GOST 17.2.3.02-2014 Rules for establishing permissible emissions of pollutants by industrial enterprises

GOST 427-75 Measuring metal rulers. Specifications

GOST 503-81 Cold-rolled low-carbon steel strip. Specifications

GOST 2211-65 Refractories and refractory raw materials. Methods for determining density

GOST 2642.0-2014 Refractories and refractory raw materials. General requirements for methods of analysis

GOST 2642.3-2014 Refractories and refractory raw materials. Methods for the determination of silicon oxide (IV)

GOST 2642.4-97 Refractories and refractory raw materials. Methods for the determination of aluminum oxide

GOST 2642.5-97 Refractories and refractory raw materials. Methods for the determination of iron oxide (III)

GOST 3560-73 Steel packing tape. Specifications

GOST 4071.2-94 (ISO 8896-86) Refractory heat-insulating products. Method for determining the compressive strength at room temperature

GOST 5402.2-2000 (ISO 2477-87) Refractory heat-insulating products. Method for determining residual dimensional changes during heating

GOST 6024-75 (ISO 5019-3-84) Refractory dinas and fireclay products for laying open-hearth furnaces. Shape and dimensions

GOST 7933-89 Cardboard for consumer packaging. General specifications

GOST 8179-98 (ISO 5022-79) Refractory products. Sampling and acceptance testing

GOST 8691-73 (ISO 5019-1-84, ISO 5019-2-84, ISO 5019-5-84) General purpose refractory products. Shape and dimensions

GOST 12170-85 Refractories. Stationary method for determining thermal conductivity

GOST 13997.0-84 Zirconium-containing refractory materials and products. General requirements for methods of analysis

GOST 13997.4-84 Zirconium-containing refractory materials and products. Methods for the determination of zirconium dioxide

GOST 13997.7-84 Zirconium-containing refractory materials and products. Methods for the determination of aluminum oxide

GOST 20901-75 Refractory and highly refractory products for laying air heaters and hot blast air ducts of blast furnaces. Specifications

GOST 21436-2004 Refractory and highly refractory products for lining of rotary kilns. Specifications

GOST 24468-80 (ISO 5016-86) Refractory products. Method for determining the apparent density and total porosity of thermal insulation products

GOST 24717-2004 Refractories and refractory raw materials. Marking, packaging, transportation and storage

GOST 28833-90 Defects in refractory products. Terms and Definitions

GOST 28874-2004 Refractories. Classification

GOST 30762-2001 Refractory products. Methods for measuring geometric dimensions, shape defects and surfaces.

Note - When using this standard, it is advisable to check the validity of reference standards (and classifiers) on the territory of the state according to the corresponding index of standards (and classifiers) compiled as of January 1 of the current year, and according to the corresponding information indicators published in the current year. If the reference document is replaced (modified), then when using this standard, you should be guided by the replaced (modified) standard. If the referenced document is canceled without replacement, then the provision in which the link to it is given applies to the extent that this link is not affected.

3 Terms and definitions

This standard uses the terms according to GOST 28833, GOST 28874, as well as the following terms with the corresponding definitions:

3.1 shaped product of complex configuration: Refractory product, the configuration of which contains more than two elements of complexity, for example, grooves, tongues, recesses, indirect dihedral and flat corners or curved surfaces, the number of faces is more than six; product weighing not more than 15 kg, having a length to width ratio of not less than 6:1 or a thickness not more than 40 mm.

3.2 classification temperature: The maximum temperature at which the residual change in the dimensions of a sample of a heat-insulating product after isothermal exposure for 5 hours does not exceed 2%.

Note - The classification temperature is used only to designate heat-insulating products according to the classification feature in accordance with. The classification temperature is not the maximum application temperature.

3.3 heat-insulating hardened refractory product: A heat-insulating refractory product characterized by an increased (by at least 50%) compressive strength in comparison with a product of a similar chemical-mineral composition and equal apparent density.

3.4 heat-insulating refractory concrete product: Refractory concrete product with a total porosity of 45% or more.

4 Stamps

4.1 Products, depending on the chemical and mineral composition and apparent density, are divided into grades indicated in table 1.

Table 1 - Characteristics of product brands

INTERSTATE STANDARD

FIRE-RESISTANT AND HIGH-REFRACTORY LIGHT-WEIGHT THERMAL INSULATION PRODUCTS

Specifications

Official edition

INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION

Group I22

to GOST 5040-96 Refractory and highly refractory lightweight heat-insulating products. Specifications

(IUS No. 12 2000)

Group I22

to GOST 5040-96 Refractory and highly refractory lightweight heat-insulating products. Specifications

(ICC No. 6 2001)

Foreword

1 DEVELOPED by the Ukrainian State Research Institute of Refractories (UkrNIIO)

INTRODUCED by the State Committee of Ukraine for Standardization, Metrology and Certification

2 ADOPTED by the Interstate Council for Standardization, Metrology and Certification (Minutes No. 10 dated 03.10.96)

3 By Decree of the State Committee of the Russian Federation for Standardization and Metrology dated December 15, 1999 No. 513-st, the interstate standard GOST 5040-96 was put into effect directly as the state standard of the Russian Federation from July 1, 2000.

4 INSTEAD OF GOST 5040-78

© IPK Standards Publishing House, 2000

This standard cannot be fully or partially reproduced, replicated and distributed as official publications on the territory of the Russian Federation without the permission of the State Standard of Russia

1 area of ​​use............................................... ....... one

3 Stamps.............................................. ................. 2

4 Shape and dimensions ........................................................ ........... 3

5 Specifications .................................................................. ..... 3

6 Safety and environmental requirements............................................... 5

7 Rules for acceptance ............................................... .......... five

8 Test methods............................................................... ........ 6

9 Marking, packaging, transport and storage............................................... 6

Annex A Conversion of 1 ton of mass of products into volume units ....................... 7

INTERSTATE STANDARD

LIGHTWEIGHT REFRACTORY AND HIGHLY REFRACTORY PRODUCTS

HEAT INSULATION

Specifications

Lightweight heatinsulating refractory and high-refractory products. Specifications

Introduction date 2000-07-01

1 area of ​​use

This standard applies to lightweight heat-insulating refractory and highly refractory products: dinas, fireclay, mullite-silica, mullite and corundum with an apparent density of not more than 1.3 g / cm 3.

Lightweight heat-insulating products are used in the working (unprotected) lining of furnaces that are not subject to the action of melts, abrading forces and mechanical shocks, or in intermediate (protected) insulation.

2 Normative references

GOST 12.0.001-82 System of labor safety standards. Main provisions of GOST 12.0.003-74 Occupational safety standards system. Dangerous and harmful production factors. Classification

GOST 12.1.005-88 System of labor safety standards. General sanitary and hygienic requirements for the air of the working area

GOST 12.4.028-76 Occupational safety standards system. Respirators ShB-1 "Petal". Specifications

GOST 12.4.041-89 System of labor safety standards. Means of individual protection of respiratory organs filtering. General technical requirements

GOST 17.0.0.01-76 System of standards in the field of nature protection and improvement of the use of natural resources. Key points

GOST 17.2.3.02-78 Nature protection. Atmosphere. Rules for establishing permissible emissions of harmful substances by industrial enterprises

GOST 166-89 (ISO 3599-76) Calipers. Specifications GOST 427-75 (ISO 5018-83) Measuring metal rulers. Specifications GOST 2211-65 Refractory products, raw materials and materials. Density determination method GOST 2642.0-86 Refractories and refractory raw materials. General requirements for methods of analysis GOST 2642.3-97 Refractories and refractory raw materials. Methods for determination of silicon oxide (IV) GOST 2642.4-97 Refractories and refractory raw materials. Methods for determination of aluminum oxide GOST 2642.5-97 Refractories and refractory raw materials. Methods for determination of iron oxide (III) GOST 2991-85 Non-separable wooden boxes for loads weighing up to 500 kg. General specifications

GOST 4071.2-94 (ISO 8895-86) Refractory heat-insulating products. Method for determination of compressive strength at room temperature GOST 5244-79 Wood shavings. Specifications

GOST 5402-81 (ISO 5019-3-84) Refractory products. Method for determining additional linear shrinkage or growth

GOST 6024-75 Refractory dinas and fireclay products for laying open-hearth furnaces. Specifications

Official edition

GOST 8074-82 Instrumental microscopes. Types, basic parameters and sizes. Technical requirements

GOST 8179-98 (ISO 5022-79) Refractory products. Acceptance rules GOST 8273-75 Wrapping paper. Specifications

GOST 8691-73 (ISO 5019-1-84, ISO 5019-2-84, ISO 5019-5-84) General purpose refractory products. Specifications

GOST 9347-74 Gasketboard and gaskets from it. Specifications GOST 10198-91 Plank boxes for loads weighing St. 500 to 20000 kg. General technical

GOST 10905-86 Calibration and marking plates. Specifications GOST 12170-85 Refractories. Stationary method for measuring thermal conductivity GOST 15136-78 Refractory products. Method for measuring the depth of brokenness of corners and ribs GOST 20901-75 Refractory and highly refractory products for laying air heaters and hot blast air ducts of blast furnaces. Specifications

GOST 21436-75 (ISO 9205-88) Refractory and highly refractory products for lining of rotary kilns. Specifications

GOST 24468-80 (ISO 5016-86) Refractory products. Method for determining the apparent density and total porosity of thermal insulation products

GOST 24597-81 Packages of packaged goods. Main parameters and dimensions

GOST 24717-94 Refractories and refractory raw materials. Labeling, packaging, storage and trans

porting

GOST 25706-83 Loupes. Types, basic parameters. General technical requirements

3 stamps

3.1 Lightweight heat-insulating products, depending on the chemical and mineral composition and apparent density, are divided into grades indicated in table 1.

Table 1 - Characteristics of brands of lightweight heat-insulating products

4 Shape and dimensions

4.1 The shape and dimensions of lightweight products - according to GOST 6024, GOST 8691, GOST 20901, GOST 21436 in accordance with table 2.

Table 2 - Shape and dimensions of lightweight products

4.2 Limit deviations in product dimensions must correspond to those indicated in table 3.

Table 3 - Limit deviations in the dimensions of lightweight products

In millimeters

4.3 Additional shapes and sizes of products, as well as maximum deviations in size, can be set by agreement of the parties.

5 Technical requirements

5.1 In terms of physical and chemical parameters, lightweight products must comply with the requirements specified in Table 4, with the following additions.

5.1.1 For products of all brands, the apparent density may deviate upward by 0.1 g/cm 3 for one product out of three.

5.1.2 For products of all grades, except ShL-0.4 and ShL 1-0.4, having overall dimensions of more than 250 mmx124 mmx75 mm, a decrease in compressive strength by 0.5 N/mm 2 is allowed.

Table 4 - Physical and chemical parameters of lightweight products

* Determined at the request of the consumer.

GOST 5040-96

5.2 In terms of appearance, the products must meet the requirements specified in Table 5.

5.3 On the fracture surface of products are not allowed: for grades ShL-0.4 and ShL1-0.4 - cracks more than 2 mm wide and more than 60 mm long, voids and foreign inclusions larger than 20 mm, for other grades - cracks more than 2 mm wide mm and more than 30 mm long, foreign inclusions and voids larger than 10 mm.

6 Safety and environmental requirements

6.1 In the production and use of lightweight dinas products, a harmful production factor is inorganic quartzite dust containing silicon oxide, which belongs to the 3rd hazard class. The maximum permissible concentration (MAC) of quartzite dust in the air of the working area of ​​industrial premises should not exceed 1 mg/m 3 (GOST 12.1.005).

6.2 In the production and use of fireclay, mullite-silica, mullite and corundum lightweight products, a harmful production factor is inorganic dust containing aluminum oxide with an admixture of free silicon dioxide and iron oxide, which belongs to the fourth hazard class. MPC of the specified dust in the air of the working area of ​​industrial premises should not exceed 6 mg/m 3 (GOST 12.1.005).

6.3 General safety requirements when working with lightweight products - according to GOST 12.0.001, GOST 12.0.003, GOST 12.1.005, GOST 12.4.028, GOST 12.4.041.

6.4 In the production and use of lightweight products, environmental standards must be observed - GOST 17.0.0.01, GOST 17.2.3.02.

Table 5 - Indicators of the appearance of lightweight products

In millimeters

7 Acceptance rules

7.1 Rules for acceptance of products - according to GOST 8179 with the following additions.

7.1.1 The mass of a batch of lightweight products is set in volume units for all brands no more than 80 m 3, for products of the ShTL-0.6, ShL-0.4 and ShL 1-0.4 brands - no more than 25 m 3. The conversion of the mass of products into volume units is indicated in Appendix A.

7.1.2 For the acceptance of mass-produced products, control plan number one is used, for critical products - number two.

7.1.3 In terms of appearance and size in the sample, one defective sample is allowed for products with an apparent density of more than 1.0 g / cm 3, for products with an apparent density of less than 1.0 g / cm 3 - two defective samples.

7.1.4 When checking the conformity of the quality of products with the requirements of this standard, acceptance tests are carried out with the frequency of sampling and sampling to determine: appearance indicators, apparent density, compressive strength - from each lot, other indicators - from every third lot.

8 Test methods

8.1 The mass fraction of A1 2 0 3 , Fe 2 0 3 , Si0 2 is determined according to GOST 2642.0, GOST 2642.4, GOST 2642.5, GOST 2642.3 or other methods of analysis that provide the required accuracy of determination. In the event of disagreement in assessing the quality of products, determinations are carried out in accordance with GOST 2642.4, GOST 2642.5, GOST 2642.3.

8.2 The apparent density is determined according to GOST 24468.

The value of apparent density, determined to the nearest 0.01, shall be rounded up to 0.1. A value below 0.05 is discarded; at 0.05 and above, 0.1 is added.

8.3 Additional linear shrinkage or growth when holding products for 2 hours is determined according to GOST 5402.

8.4 Compressive strength is determined according to GOST 4071.2.

If cracks are found on the sample intended for determining the compressive strength, the sample can be replaced from the same sample no more than two times. If, after a double replacement, the sample has a crack on the cut, the structure of the batch products in the fracture is re-checked on a double number of samples.

8.5 Thermal conductivity is determined according to GOST 12170.

8.6 Density is determined according to GOST 2211.

8.7 The dimensions are checked with a caliper in accordance with GOST 166 with a division value of 0.1 mm or a metal ruler in accordance with GOST 427 with a division value of 1 mm. Product dimensions (length, width, thickness) are measured in the middle of each face.

8.8 The curvature of products is determined on a calibration plate in accordance with GOST 10905 or a certified metal plate that meets the requirements of GOST 10905, using a template probe 10 mm wide and 0.1 mm thick exceeding the established curvature norm.

The probe must not enter the gap between the plate and the product.

8.9 Depth of broken corners and ribs is determined according to GOST 15136.

8.10 The width of the cracks is determined using a measuring magnifier according to GOST 25706 or an instrumental microscope according to GOST 8074. The magnifying glass is positioned so that its scale is perpendicular to the crack. A strip of white paper is placed between the scale and the surface of the products, which is placed along the scale close to its division. The width of the crack is determined in the place of maximum value.

The length of the crack is measured with a metal ruler with a division value of 1 mm.

8.11 The diameter of melts, voids and foreign inclusions is determined with a metal ruler with a division value of 1 mm in the place of their maximum value. The diameter of the melts is measured by the diameter of the cavity formed by the melt.

9 Marking, packaging, transport and storage

9.1 Marking, packaging, transportation and storage of products is carried out in accordance with GOST 24717 with the following additions.

9.1.1 For products of the ShL-0.9, ShTL-0.6, ShL-0.4, ShL1-0.4, MKRL-0.8, KL-1.3 and KL-1.1 brands, manufactured by the foam method and casting , when wrapping them in paper or loading them into boxes, containers, bags and pallets, the marking is applied not to the products, but to the packaging or container.

9.1.2 Products of all brands are packed in bags in accordance with GOST 24717 or boxes in accordance with GOST 2991 and GOST 10198 types 1-1, 1-2. Products of the ShTL-0.6, ShL-0.4, ShL1-0.4, MKRL-0.8 brands are additionally packed in wrapping paper in accordance with GOST 8273. It is allowed to pack products in bags with mandatory protection of the outer corners and ribs with thick paper or cardboard in accordance with GOST 9347. Overall dimensions of the package - in accordance with GOST 24597. When transporting products in boxes, the products are sprinkled with wood shavings in accordance with GOST 5244. Trellised boxes are lined from the inside with wrapping paper or cardboard. Horizontal rows are lined with paper.

9.2 Packaging, transportation and storage of products may be carried out by agreement of the parties, provided that the performance of the products is guaranteed.

APPENDIX A (informative)

Converting 1 ton of mass of products into volume units

Table A.1

Note - Volume units are converted to mass units by multiplying volume units by the apparent density of the products indicated in the accompanying document.

UDC 666.762.127:662.998:006.354 MKS 81.080 I22 OKP 15 7000

Keywords: refractory, highly refractory, lightweight, heat-insulating products

Editor R. S. Fedorova Technical editor V.I. Prusakova Proofreader R.L. Cop Computer layout VZh. Grishchenko

Ed. persons. Ns 021007 dated 10.08.95. Handed over to the set 05/23/2000. Signed for publication on 06/08/2000. Uel. oven l. 1.40.

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