Introduction
GB/T8263-1987 (Cast-Iron Anti-Abrasion White Mouth) is a standard whose raw material is cast-iron anti-abrasion white mouth and is applicable to the production of cast-iron anti-abrasion white mouth.
The type, code number and code name of the standardized product are as follows:
1. Type: H-type white mouth, L-type white mouth, A-type white mouth, X-type white mouth;
2. Code number: H-20, H-30, H-40, H-50, L-20, L-30, L-40, A-20, A-30, X-20;
3. Code name: H-type white mouth (HL), L-type white mouth (LL), A-type white mouth (AL), X-type white mouth (XL).
Main Content
1. General requirements
Generally, the surface of the cast iron anti-abrasion white mouth should be degreased and pickled. In principle, the product should not have any defects or quality defects that affect its performance, such as rust and cracks. The dimensions of the standard anti-abrasion white mouth shall comply with the requirements of the relevant drawings and the tolerance shall be GB1499.
2. Technical requirements
The cast iron anti-abrasion white mouth should meet the chemical composition requirements stipulated in GB/T8263-1987. In addition, it must meet the technical requirements for tensile strength, hardness, and impact strength.
(1) Tensile strength: The tensile strength of cast iron anti-abrasion white mouth should meet the requirements of GB1499.2-2002.
(2) Hardness: The hardness of cast iron anti-abrasion white mouth should meet the requirements of GB/T17935-2013.
(3) Impact strength: The impact strength of cast iron anti-abrasion white mouth should meet the requirements of GB/T13359-2008.
3. Product inspection
According to the relevant standards, testing of cast iron anti-abrasion white mouth shall include, but is not limited to, chemical composition analysis, hardness test, tensile strength test, impact test and visual inspection. Only qualified products can be delivered and used in the production process.
Conclusion
GB/T8263-1987 (Cast-Iron Anti-Abrasion White Mouth) is a standard that specifies the production requirements and quality requirements of cast iron anti-abrasion white mouth. The raw material of the product is iron, and all products must meet the requirements of relevant standards in terms of chemical composition, tensile strength, hardness and impact strength in order to ensure that the product meets the requirements of the standard. In addition, the product must pass the inspection before leaving the factory.
