YB/T 4129-2023 塑性相复合刚玉砖/Plastic phase composite corundum brick
塑性相复合刚玉砖
1范围
本文件规定了塑性相复合刚玉砖的术语和定义、牌号、技术要求、试验方法、质量评定程序、包装、标志、运输和质量证明书。
本文件主要适用于砌筑高炉炉缸、炉底内衬用砖。
2规范性引用文件
下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中,注日期的引用文件，仅该日期对应的版本适用于本文件:凡是不注日期的引用文件，其最新版本适用于本文件。
GB/T 2997致密定形耐火制品体积密度、显气孔率和真气孔率试验方法。
GB/T 5072耐火材料 常温耐压强度试验方法。
GB/T 6900铝硅系耐火材料化学分析方法。
GB/T 7321定形耐火制品试样制备方法。
GB/T 10325定形耐火制品验收抽样检验规则。
GB/T 10326定形耐火制品尺寸、外观及断面的检查方法。
GB/T 16546定形耐火材料包装、标志、运输、储存和质量证明书的一般规定。
GB/T 16555含碳、碳化硅、氮化物耐火材料化学分析方法。
GB/T 18930耐火材料 术语。
GB/T 21114耐火材料 X 射线荧光光谱化学分析 熔铸玻璃片法。
YB/T 370耐火材料荷重软化温度试验方法(非示差–升温法)。
YBT 5012高炉及热风炉用耐火砖形状尺寸。
3术语和定义
GB/T 18930界定的以及下列术语和定义适用于本文件。
3.1
塑性相 plastic phase
存在于刚性颗粒间界的、在成型、烧成和使用过程中表现出延展性的金属物相。
3.2
塑性相复合刚玉砖 corundum composite block containing plastic phasc
含有一定塑性相的、以刚玉和非氧化物为主要成分的复合耐火制品。
3.3
塑性相复合刚玉莫来石砖 corundum mullite block containing plastic phasc
含有一定塑性相的、以刚玉和莫来石为主要成分的复合耐火制品。
4牌号
4.1塑性相复合刚玉砖按主要成分及理化指标的不同分为ZSG-1、ZSG-2、ZSG-3、ZSG-4、ZSG-5和ZSG-6共六个牌号。其中“Z”、“S”“G”分别是“砖”、“塑性相”、“刚玉”的首个汉字的汉语拼音首字母，其后的数字代表产品的系列号。
5技术要求
5.1 塑性相复合刚玉砖的理化指标应符合表1的规定。
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表1塑性相复合刚玉砖理化指标 |
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项目 |
指 标 |
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|
ZSG-1 |
ZSG-2 |
ZSG-3 |
ZSG-4 |
ZSG-5 |
ZSG-6 |
||||
|
w(Al2O3)/% |
μ0 |
≥ |
80 |
75 |
70 |
78 |
65 |
85 |
|
|
σ |
0.8 |
0.8 |
0.8 |
0.8 |
0.8 |
0.8 |
|||
|
w(SiC)/% |
μ0 |
6~10 |
6~10 |
– |
2~5 |
15~20 |
– |
||
|
w(Si3N4)/% |
μ0 |
– |
– |
5~10 |
4~8 |
– |
– |
||
|
体积密度/(g/cm’) |
μ0 |
≥ |
3.00(2.95) |
2.90(2.85) |
2.90(2.85) |
2.90(2.85) |
2.90(2.85) |
3.00(2.95) |
|
|
σ |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
|||
|
显气孔率/% |
μ0 |
≤ |
15(17) |
16(18) |
16(18) |
16(18) |
13(15) |
16(18) |
|
|
σ |
1.5 |
1.5 |
1.5 |
1.5 |
1.5 |
1.5 |
|||
|
常温耐压强度/MPa |
μ0 |
≥ |
110(100) |
90(85) |
100(90) |
100(90) |
100(90) |
100(90) |
|
|
σ |
15 |
15 |
15 |
15 |
15 |
15 |
|||
|
荷重软化温度(T0.6)/℃ |
μ0 |
≥ |
1680 |
1660 |
1680 |
1660 |
1680 |
1680 |
|
|
σ |
30 |
30 |
30 |
30 |
30 |
30 |
|||
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注:括号内数据为风口、铁口等振动成型产品指标。 |
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5.2塑性相复合刚玉砖的形状尺寸应符合YB/T 5012的规定，也可以按用户图纸生产。
5.3塑性相复合刚玉砖的尺寸允许偏差和外观应符合表2的规定。
6试验方法
6.1制样制备按GB/T 7321进行。
6.2氧化铝的测定按GB/T 6900或GB/T 21114进行。
6.3碳化硅和氮化硅的检测定按GB/T 16555进行。
6.4体积密度和显孔率的测定按GB/T 2997进行。
6.5常温耐压强度的测定按GB/T 5072进行。
6.6荷重软化温度的测定按YB/T 370进行。
6.7尺寸、外观及断面的检查按GB/T 10326进行。
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表2塑性相复合刚玉砖尺寸允许偏差及外观 单位: mm |
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|
项目 |
指标 |
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尺寸允许偏差 |
长度 |
炉底砖 |
±1.0 |
|
其他砖 |
±1.5 |
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宽度 |
±1.0 |
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厚度 |
±0.5 |
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缺角长度(a+b+c) |
工作面 |
≤25 |
|
|
缺棱长度(e+f+g) |
非工作面 |
40 |
|
|
熔洞 |
直径 |
5 |
|
|
深度 |
≤5 |
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扭曲 |
炉底砖 |
≤0.8 |
|
|
其他砖 |
≤1.0 |
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裂纹长度 |
宽度≤0.10 |
不限制(不允许跨两个棱) |
|
|
宽度0.11~0.50 |
工作面 |
≤30 |
|
|
非工作面 |
≤50 |
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宽度>0.50 |
不准有 |
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注:用户要求整体预组装时单砖尺寸偏差可适当调整，整体预组装验收标准由双方协议确定。 |
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7质量评定程序
7.1组批
产品按同一牌号组批，同类产品每300t为一批，不足300t按一批进行。
7.2抽样及合格判定规则
7.2.1产品的抽样验收按 GB/T 10325进行。
7.2.2产品的验收检验项目包括:Al2O3;含量、荷重软化温度、常温耐压强度和显气孔率。
7.3合格评定形式
合格评定可采用供货方声明、使用方认定或第三方认证的形式进行。
8包装、标志、运输、储存和质量证明书
8.1产品的包装、标志、运输和储存按GB/T 16546进行。
8.2产品发出时应附有供方质量部门签发的质量证明书和产品使用说明书，质量证明书应载明供方名称、需方名称、生产日期、合同号、本文件编号、产品名称、牌号、批号、理化指标及保存期等内容。
Plastic phase composite corundum brick
1 Range
This document specifies the terms and definitions, grades, technical requirements, test methods, quality assessment procedures, packaging, marking, transportation and quality certificates of plastic phase composite corundum bricks.
This document is mainly applicable to laying bricks for furnace cylinder and furnace bottom lining.
2 Normative reference documents
The contents of the following documents constitute the essential provisions of this document through normative references in the text. If a reference file is dated, only the version corresponding to that date applies to this document. If a reference file is not dated, its latest version applies to this document.
Test method for bulk density, apparent porosity and true porosity of GB/T 2997 compact shaped refractory products.
GB/T 5072 refractories – normal temperature compressive strength test method.
GB/T 6900 aluminum-silicon refractory chemical analysis method.
GB/T 7321 shaped refractory product sample preparation method.
GB/T 10325 shaped refractory products acceptance sampling inspection rules.
GB/T 10326 shaped refractory products size, appearance and section inspection method.
GB/T 16546 General requirements for packaging, marking, transport, storage and quality certificates for shaped refractory materials.
GB/T 16555 Method for chemical analysis of refractories containing carbon, silicon carbide and nitride.
GB/T 18930 refractory terminology.
GB/T 21114 refractories by X-ray fluorescence spectrochemical analysis of fused cast glass sheets.
Test method for softening temperature of YB/T 370 refractories under load (non-differential – rising temperature method).
YBT 5012 Shape and dimension of firebrick for blast furnace and hot blast stove.
3 Terms and definitions
GB/T 18930 and the following terms and definitions apply to this document.
3.1
Plastic phase
A metallic phase that exists at the boundary between rigid particles and exhibits malleability during forming, firing, and use.
3.2
Corundum composite block containing plastic phase
Composite refractory products containing a certain plastic phase with corundum and non-oxide as the main components.
3.3
Corundum Mullite block containing plastic phase
Composite refractory products containing a certain plastic phase, with corundum and mullite as the main components.
Fourth grade
4.1 Plastic phase composite corundum bricks are divided into ZSG-1, ZSG-2, ZSG-3, ZSG-4, ZSG-5 and ZSG-6 grades according to the main composition and physical and chemical indexes. Among them, “Z”, “S” and “G” are the first letters of the Chinese pinyin of the first Chinese character of “brick”, “plastic phase” and “corundum” respectively, and the following numbers represent the series number of the product.
5 Technical Requirements
5.1 The physical and chemical indexes of plastic phase composite corundum bricks shall comply with the provisions of Table 1
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Table 1 Physical and chemical indexes of plastic phase composite corundum brick |
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Item |
Index |
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|
ZSG-1 |
ZSG-2 |
ZSG-3 |
ZSG-4 |
ZSG-5 |
ZSG-6 |
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|
w(Al2O3)/% |
μ0 |
≥ |
80 |
75 |
70 |
78 |
65 |
85 |
|
|
σ |
0.8 |
0.8 |
0.8 |
0.8 |
0.8 |
0.8 |
|||
|
w(SiC)/% |
μ0 |
6~10 |
6~10 |
– |
2~5 |
15~20 |
– |
||
|
w(Si3N4)/% |
μ0 |
– |
– |
5~10 |
4~8 |
– |
– |
||
|
Bulk density/(g/cm’) |
μ0 |
≥ |
3.00(2.95) |
2.90(2.85) |
2.90(2.85) |
2.90(2.85) |
2.90(2.85) |
3.00(2.95) |
|
|
σ |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
|||
|
Apparent porosity/% |
μ0 |
≤ |
15(17) |
16(18) |
16(18) |
16(18) |
13(15) |
16(18) |
|
|
σ |
1.5 |
1.5 |
1.5 |
1.5 |
1.5 |
1.5 |
|||
|
Compressive strength/MPa |
μ0 |
≥ |
110(100) |
90(85) |
100(90) |
100(90) |
100(90) |
100(90) |
|
|
σ |
15 |
15 |
15 |
15 |
15 |
15 |
|||
|
Softening temperature under load(T0.6)/℃ |
μ0 |
≥ |
1680 |
1660 |
1680 |
1660 |
1680 |
1680 |
|
|
σ |
30 |
30 |
30 |
30 |
30 |
30 |
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|
Note: The data in brackets are the indicators of vibration molding products such as tuyere and iron mouth. |
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5.2 The shape and size of plastic phase composite corundum bricks shall comply with the provisions of YB/T 5012, and can also be produced according to user drawings.
5.3 The size permissible deviation and appearance of plastic phase composite corundum brick shall comply with the provisions of Table 2.
6 Test methods
6.1 Sample preparation shall be carried out according to GB/T 7321.
6.2 Alumina is measured at GB/T 6900 or GB/T 21114.
6.3 The detection of silicon carbide and silicon nitride shall be carried out according to GB/T 16555.
6.4 The bulk density and apparent porosity were measured according to GB/T 2997.
6.5 The compressive strength at room temperature shall be measured according to GB/T 5072.
6.6 The load softening temperature was measured according to YB/T 370.
6.7 The inspection of dimensions, appearance and section shall be carried out according to GB/T 10326.
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Table 2 Allowable size deviation and appearance of plastic phase composite corundum brick Unit: mm |
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Item |
Index |
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Allowable deviation of dimension |
Length |
Bottom brick |
±1.0 |
|
Other brick |
±1.5 |
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Breadth |
±1.0 |
||
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Thickness |
±0.5 |
||
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Missing Angle length (a+b+c) |
Working face |
≤25 |
|
|
Missing edge length (e+f+g) |
Non-working face |
40 |
|
|
Molten cavern |
Diameter |
5 |
|
|
Profundity |
≤5 |
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Contort |
Bottom brick |
≤0.8 |
|
|
Other brick |
≤1.0 |
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Crack length |
Breadth≤0.10 |
No limit (not allowed across two edges) |
|
|
Breadth0.11~0.50 |
Working face |
≤30 |
|
|
Non-working face |
≤50 |
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Breadth>0.50 |
Be forbidden from |
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Note: The size deviation of single brick can be adjusted appropriately when the user requires the whole pre-assembly, and the acceptance standard of the whole pre-assembly shall be determined by the agreement between the two parties. |
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7 Quality assessment procedures
7.1 Batch
Products according to the same brand group batch, similar products every 300t for a batch, less than 300t according to a batch.
7.2 Rules for sampling and conformity determination
7.2.1 Sampling acceptance of products shall be carried out according to GB/T 10325.
7.2.2 Acceptance inspection items of products include :Al2O3; Content, softening temperature under load, compressive strength at room temperature and apparent porosity.
7.3 Form of conformity assessment
The conformity assessment can be made in the form of the supplier’s declaration, the user’s certification or the third party’s certification.
8 Packing, marking, transportation, storage and quality certificate
8.1 Products are packed, marked, transported and stored in GB/T 16546.
8.2 The product shall be issued with a quality certificate issued by the quality department of the supplier and a product instruction manual. The quality certificate shall contain the name of the supplier, the name of the demander, the date of production, the contract number, the number of this document, the name of the product, the brand number, the batch number, the physical and chemical index and the shelf life.
