A necessary precondition for the chain plate chain plate cracking factor stress corrosion cracking occurs is to have the tensile stress (whether residual stress or applied stress, or both) and the specific erosion media presence. Type of pattern formation and expansion of a substantially vertical direction and tensile stress. This stress leads to stress corrosion cracking, there is no erosion of the medium than the presence of the material required for fracture stress value is much smaller. At the micro, through the grain called transgranular crack crack use stainless steel chain plate, and spread along the grain boundary map called intergranular cracks cracks, stress corrosion cracking when extended to one depth (here, bear the load stress on the cross section of the material reaches its breaking stress in the air), the link plate material on normal cracks (in the ductile material 881 stainless steel chain plate, usually by microscopic defects polymerization) disconnected. Therefore, stainless steel chain plate sample, because of stress corrosion cracking and failure of parts of the section, will include stress corrosion cracking characteristics of the region as well as the micro-defects have been linked polymeric "dimple" area. Measuring the elongation of the chain 1. To remove the entire chain of clearance, to some extent under the application of pulling tension measurement 2. measurement, in order to minimize the error stainless steel chain plates, in Section 6-10 (link) in the chain L1 L2 medial and lateral dimensions of local measurements 3. Measure the number of sections between the rollers, in order to determine the size L = (L1 + L2) / 2 4. determine the length of the chain elongation, the value and the previous item The use of chain elongation threshold contrast chain elongation = judge size - standard length / reference length * 100% * reference length = chain pitch sessions stainless steel chain plate samples 西卢 chain network Factory (certified), Qujing stainless steel chain plates by Ning County 西卢 chain network plant. Ning County Xi Lu chain network Factory (www.njxllw.cn) Shandong Dezhou, chains, sprockets leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Xi Lu chain network in the plant leadership with the staff warmly welcome all inquiries negotiations to create Xi Lu chain network plant a better future.