This standard specifies the classification, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage and quality certificate of air bricks and seat bricks for refined steel ladles. This standard applies to directional slit air bricks and seat bricks for refined steel ladles. YB/T 4118-2003 Air bricks and seat bricks for refined steel ladles YB/T4118-2003 Standard download decompression password: www.bzxz.net

Appendix A of this standard is a material sufficiency appendix.
This standard is proposed and managed by the National Refractory Standardization Technical Committee. The responsible drafting units of this standard are: Luoyang Refractory Materials and Materials Research Institute, Capital Steel (Pressure) Company. The participating drafting units of this standard are: Youyin City Nanfang Materials Co., Ltd., Lixing City Zhenmei Furnace Material Co., Ltd. Y/1:4118—2003
The main drafters of the standard are Zhao Shijie, Guan Zhiqi, Zhang Hui, Wen Jianheng, E Zuolu, Bo Dazi, Lu Jimin, Yang CiT
1 Scope
Breathable bricks and seat bricks for refined steel ladles
YB/T 4118—2003
This standard specifies the classification, technical requirements, test methods, inspection and rectification rules, postal marking, packaging, transportation, storage and quality certificates of fine steel ladle bricks and seat bricks.
The standard applies to fine steel ladle with directional ventilation and its seat ball. 2 Normative references
The clauses in the following documents become the clauses of this standard through the use of this standard. The standard is a dated document, and all subsequent changes (excluding the periodic error) or revised versions are not applicable to this standard. However, the parties who reach an agreement based on this standard can use the latest version of this document. For special items without a date, the latest version applies to this standard. GB/29972 (O center release shaped refractory products volume separation, cold, Test method for apparent porosity and true porosity G13/T5089.1-0C1 Chemical analysis method for refractory materials of gold and aluminum (aluminum) ELTA titration method for determination of zirconium oxide content G13/T5089.1-120C1 Chemical analysis method for refractory materials of magnesium and magnesium-aluminum (aluminum) complexometric titration method for determination of calcium oxide and magnesium oxide
Test method for temperature resistance and pressure resistance of dense shaped refractory products BT5072
GT/TT321 Sample preparation regulations for dense shaped refractory products G13/T3325-2001 Sample acceptance rules for large products G/T13325-2001 Method for inspection of dimensions, appearance and cross-section of refractory products T3/T16545-1096 Marking, transportation and storage of refractory products YB:1370-139 Refractory products Product load temperature test monitoring method (non-differential-heating method) YT/T5232-19.1 Measurement and sample preparation of dense refractory materials YB14152003 Functional refractory material ventilation test method 150/T1312577 X-ray refraction standard for refractory materials 3 Classification and shape and size
3.1 According to the piece, it is divided into air-proof bricks and storage bricks (including decay bricks). 3.2 Bricks are divided into T80.T85.2-8U, ZB-8U, 2-85.ZB-85 according to the chemical standard. The numbers A, Z, and Z are respectively the first tenth Chinese characters of the chemical composition A0.
3.3 The shape and size of the brick shall be in accordance with the provisions of Appendix A, and can also be provided according to the demand. The drawings require production, 4 technical requirements
4.1 The chemical index of the skin shall comply with the provisions of Table 1, 4.2 The size of the small allowable article and the appearance shall comply with the provisions of Table 2 4.3 The steel sleeve and the air inlet pipe of the gas brick shall not leak. YB/I4118-203
Quality gas rate/
Usually withstand pressure a
f,3MPe True chemical development: Y
Not less than
Not less than
Full gas volume (L.: MF~2.0MP)/4/
Brick physical and chemical index
Period loss difference
The factory single decision gas carbon is gradually reversed "(excavation test, extension
Table 2 Brick size allowable deviation and appearance
ZB The size of the air-avoiding brick is within the allowable error. The length of the air-avoiding brick is average. The width is 0.26~-0.50. The filling depth is 3.5c. The unit price is mm. The air-avoiding brick is not allowed to be made. 5.1 The sample making of the ball seat shall be carried out according to GB/T7321. The air brick shall be selected according to the size of the brick. After the big head of the air brick is full of 23mum1-.1mum, a 6×m sample shall be drilled in the center for inspection. It can also control the overall requirements of users and products. If the product is produced with aerated bricks, the inspection of A, CrO and MgO shall be carried out according to ISO/DIS1267. The inspection of Al core M09 bricks without CrC shall be carried out according to GB/T5GG9.7-20n1.T/T5069.·2001 or ISO/DIS12677. The physical test of porosity shall be carried out according to GB/T29372000. 5.3
5.4 The inspection of overpressure strength under temperature shall be carried out according to GB/T5072. 5.5 The humidity control test is carried out according to YBT/(-E: 5.6 The ventilation volume test is carried out according to YB/T41182003, 5.7 The size and appearance test of the broken pipe are carried out according to H/1105262101. 5.8 The air tightness test of the steel sleeve improved pipe is carried out according to the method of removing the soap filter at the welding wall to see if there is any leakage. 6 Inspection and testing 6.1 The carbon and the seat are each not more than 500 pieces as a batch, YR/T 4118—2003
6.2 The oil sample acceptance of bricks shall be carried out in accordance with the provisions of GB/T133252001: apparent porosity, compressive strength of blue materials, load and initial temperature Acceptance measures: The allowable deviation of various material indicators during compensation shall be in accordance with the assumptions in Table 3. Table 3 Apparent porosity, load and initial temperature, and allowable deviation of normal temperature compressive strength
Official identification code: MPa
There are heavy and heavy types of initial temperature
2-60 Xue number, air entrainment rate 50%, allowable total of one single letter 215Z-BU brand flow agent 85MFa allowable H city single 76.5MI-brand load soft initial temperature 1 medium-one single estimate 1
7 Packaging, marking, transportation, storage and quality certificate 7.1 Color packaging, marking, transportation and storage in GB/ T1654619D5, the air intake of the air cooler should be selected, and the air volume should be marked on the brick level each time. 7.3 When leaving the factory, it should be accompanied by a quality certificate issued by the supplier's quality supervision department, stating the supplier's name, purchaser's name, production date, contract number, manufacturer's name, standard number, brand, size, size and physical and chemical indicators, etc. YB/T4118—2003
A.1 Air brick
A.1.1 Check the shape of the brick must be A.1
Appendix A
(Informative Appendix)
The shape and size of air bricks and base bricks for refining ladle A, 1 Spiral air brick shape indication diagram
A.1.2 The size of air bricks is shown in Table A.1
Table A, 1 Recommended air-release brick size
A2 seat phosphorus
seat broken shadow Figure A.2,
Figure A.2 seat brick type schematic diagram
single in millimeters
2 specifications and dimensions see Table 1.2
Recommended air-release brick sizewwW.bzxz.Net
YEI/T4118—2003
position is cool rice
Make the brick and the air-permeable sheet match according to the following point type,, (5 -- 1)
+* -(5--13)
(10--30)
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