Cause Analysis of Cr12MoV Steel Die Wire Cutting Crack
Using crack observation, metallographic inspection, chemical analysis, hardness inspection and other methods to analyze the cause of cracking in Cr12MoV mold online cutting. The results show that the residual stress in the material caused by the heat treatment is large, the residual stress is redistributed during wire cutting, and the tensile stress exceeding the tensile strength limit of the material at the local edge of the wire cutting of the mold is the main reason for the cracking of the...
Development of Cold Rolled Steel Strip for Kunming Steel Yellow Phosphorus Packaging Bucket
Development of Cold Rolled Steel Strip for Kunming Steel Yellow Phosphorus Packaging Bucket Zhang Yu 1, Song Shaozhong 2 (1.Technology Center of Kunming Iron and Steel Co., Ltd., WISCO Group, Kunming , China 2. Kunming Tenghe Electromechanical Engineering Co., Ltd., Kunming, Yunnan , China) 1 Introduction Yellow phosphorus is an important basic industrial raw material with a melting point of 44.1 ° C. It can spontaneously ignite in air at room temperature. Yellow phosphorus is a flammable...
High-strength packaging steel strip and its manufacturing process
Patent Name High-strength packaging steel strip and its manufacturing process Patent Applicant Wang Hongwei Principal Applicant Address 114041 Liaoning Province Anshan City Qianshan District Old Fort Man Min Street No. 38 Inventor Wang Hongyu Application (Patent) No. 200410031162.8 Date of Application 2004.04.13 Certification Date Approval Notice No. 1683582 Auditing Notice Day 2005.10.19 Instruction CD-ROM D0542 Main Classification No. C22C38/04 Classification No. C22C38/04; C21D8/04 Sub-item...
High- quality Sk7 spring steel strip
The concept of spring steel: Spring steel is steel that is specially used to make springs and elastic elements due to the elasticity in the quenched and tempered state. The elasticity of steel depends on its elastic deformation ability. Jinguang is within the specified range. The ability of elastic deformation allows it to withstand a certain load, and no permanent deformation occurs after the load is removed.
The characteristics of spring steel: The spring works mainly under dynamic load, that...
