Which manufacturer of stainless steel ball has reliable quality?
during the operation of the coal Mill, due to wear and tear, the weight and diameter of the steel ball are continuously decreasing, so new balls need to be added regularly to maintain a certain steel ball loading capacity. Stainless steel balls are generally filled with large diameter balls, and the amount of ball should be in accordance with the steel ball consumption rate (Consumption of coal and steel balls per ton of grinding)And the amount of coal to determine. After the coal mill must run for a long time, the number of small diameter steel balls in the cylinder increases. Therefore, after running for about 3000 hours, it is necessary to stop the machine to clean the steel ball in order to eliminate the ball with a diameter of less than and the broken ball, and at the same time make up the new ball. Stainless steel ball bearing steel requires high contact fatigue resistance. Therefore, the metallurgical quality of bearing steel is strictly controlled. In particular, the purity of steel and the uniformity of stainless steel balls for hinge of steel are required to be higher than those for general industrial steel. The purity of steel can be measured by inclusion grade. There is always a small amount of non-metallic inclusions in the stainless steel ball of the instrument during smelting. According to the diameter of the raw material, the brittle inclusions (Oxide)Generally not more than 2. 0 ~ 2. Level 5; Plastic inclusions (Sulfide)No more than 2. 5 ~ 3. Level 5; Point-like non-deformable inclusions (Silicate)No more than 2. 5 ~ 3. Level 5.
The contact fatigue performance has a great relationship with various nonmetallic inclusions and stainless steel balls for feeding bottles, however, silicate inclusions or brittle inclusions have great influence on contact fatigue. Inclusions are often the source of contact fatigue cracks. Due to the uncoordinated elastic-plastic deformation at the junction between them and the matrix, stress concentration is easily caused and microcracks are formed at the edge and tip of inclusions, reduce contact fatigue life. Stainless steel ball brand especially steel ball about 2. The 88mm ultra-long silicate inclusion has exceeded GB/T10561-2005 The evaluation scope of the standard. The contact fatigue life of grade 2 inclusions is 2. 7 × 109, while the contact fatigue life of Grade 5 inclusions is 5 × 108, and the actual ultra-long strip silicate inclusions are equivalent to grade 5. It can be seen that ultra-long silicate inclusions are the main factors to reduce contact fatigue life.
stainless steel ball is the main component of the bearing, and it is also the rolling body with many steel balls used in the bearing work. The quality of steel balls directly affects the quality of bearings. Steel balls are the main basic parts in the process of steel ball deployment, especially precision industrial steel balls play a huge role in the development of the national economy. Under some special conditions, stainless steel balls often need extra steel balls to complete the functions requested in different environments. Some of the original special material steel balls have been widely used in various fields of the national economy, including 9cr18, 3cr13 stainless steel, copper, aluminum, titanium alloy steel, agate, glass, ceramic balls, etc. Their popularization and application have not only promoted the development of the steel ball industry, but also promoted the development of relevant work skills and scientific and technological progress.
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