Luoyang Super League Forging Co., Ltd. for your organization about forging defect Follows is an example: It should be noted that the cylinder, various molding methods common defects and major defects in various materials forgings all have their laws. Different forming methods, because of their different stress situations, stress-strain characteristics are not the same, the main flaw which may produce is not the same. For example, the major drawback is that the blank side upsetting surface vertical or 45 ° direction of cracks on ingot upsetting, the lower end of the regular cast of residual tissue; major defects rectangular section blank when stretching is transverse crack surface and corner crack cylinder material, internal diagonal cracks and transverse cracks; open die forging major drawback when it is fully satisfied, folding and wrong move and so on. The major step in forming common defects will be described in detail in Chapter IV. Blank when the cold deformation and hardening pneumatic cylinder, so that die withstand high loads, and therefore, requires the use of high strength die and prevent wear and bonded using hard lubricating film treatment. In addition, in order to prevent the blank crack, intermediate annealing to ensure that the needs of deformation when needed. In order to maintain good lubrication cylinder car, the blank may be phosphate treatment. When working with a continuous bar and wire rod, the current section can not be lubricated process, is studying the possibility of using phosphate lubrication method. Automobile cylinder, forged Super League (certified), Song County cylinder by the Luoyang Super League Forging Limited. Luoyang Super League Forging Co., Ltd. (www.lysmzg.com) (www.lysmzg.cn) is Luoyang, forging leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. Super League leaders in forging the staff warmly welcome all inquiries negotiations to create the Super League forging a better future.