1. The inherent quality of steel caused cracking cracking: strict internal quality control of steel. 2. The original tissue thick: improve the organization through appropriate pre-heat treatment. 3. quenching temperature is too high or too long holding time: proper understanding of heat treatment to improve the organization. 4. In the area of ??temper brittleness tempering: try to avoid the area tempering temper brittleness. 5. tempering tempering temperature is low or insufficient time: select the appropriate tempering process. 1. The presence of deformed steel carbide segregation and accumulation: Select the appropriate forging process. 2. Large-scale die selected low hardenability of steel: the correct selection of the appropriate forging steel. 3. Surface decarbonization or machine is not cleared when the machined surface decarburization: Note heating within the protective ring sales, bath deoxygenation. The quenching temperature is too high, lack of heating time: strict control of the quenching process. 5. alkali bath water is too small: strict control of alkali bath water. 6. In the coolant residence time of less than: increased residence time. 7. tempering temperature: Select the appropriate tempering temperature. The low-speed ring, ring gear Jiaxing, Super League Super League forging Forging Co., Ltd. Luoyang provided. Luoyang Super League Forging Co., Ltd. (www.lysmzg.com) (www.lysmzg.com) strong, credible, in Luoyang forging industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Super League forging into the brilliant and you work for a better future! You can also access (www.lysmzg.com/supply_details_46322955.html), for more information about the company.