स्टील की गेंदों का सेवा जीवन आम तौर पर अपेक्षाकृत लंबा होता है, लेकिन कुछ ग्राहक पूछते हैं कि अन्य स्थानों से खरीदी गई स्टील की गेंदों में दरारें और दरारें क्यों होती हैं, जिसमें एक महत्वपूर्ण शब्द, आंतरिक तनाव शामिल होता है।
Generally speaking, some materials such as stainless steel ball 300 series (304, 316) do not need heat treatment, such as bearing steel, stainless steel 440C, carbon steel, etc., all need heat treatment.
Heat treatment is a metal thermal processing process that heats, maintains and cools metal materials in a certain medium, and controls its performance by changing the metallographic structure on the surface or inside of the material. There is internal stress after heat treatment, and if the internal stress is too large, it will affect the internal structure of the steel ball, and it is easy to crack in the subsequent processing and use of the finished product. Therefore, we generally need to pass through strengthening after heat treatment. Strengthening means continuous consumption. Internal stress, optimize the internal structure of the steel ball, and do this step well, the above-mentioned steel ball cracking problem will not occur.
