We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
染色机换热器封头裂纹及产生机理.
- Authors
关鹏涛; 张明涛; 裘浩田; 潘薛臣; 陆 坚
- Abstract
In order to solve the problem of transverse crack in the head of dyeing machine heat exchanger, the nondestructive testing and physicochemical analysis were used to comprehensively examine the head defect position・ Test results show that crack propagation rate on the outer surface is faster than that on the inner surface・ The propagation direction of cracks in martensite is roughly parallel to the thin strip, and the maximum martensite volume fraction and hardness of the straight edge segment on the outer surface are about two times of that on the inner surface・ The results show that chloride stress corrosion cracking is formed under the combined action of residual stress, mechanical scratch, deformation martensite structure and chloride ion environment. The macro and physical and chemical reinspection should be added when the head is used・ It is suggested that the restriction of ferrite mass fraction after cold processing of austenitic stainless steel should be added in relevant national standard.
- Subjects
AUSTENITIC stainless steel; STRESS corrosion cracking; CRACK propagation (Fracture mechanics); NONDESTRUCTIVE testing; DYEING machines; CHLORIDE ions
- Publication
Light Industry Machinery, 2022, Vol 40, Issue 4, p89
- ISSN
1005-2895
- Publication type
Article
- DOI
10.3969/j.issn.1005-2895.2022.04.015