Entries by Hexin Africa

Influence of Filling Modes on Blowhole Defects of High Chromium Cast Iron Grinding Ball (1)

Abstract: To solve the problem of the blowhole defects in the center and on the high chromium cast iron grinding ball’s surface, the influence of the two filling modes—one-ball mold and four-ball mold on blowhole defects were analyzed. The result indicated that the four-ball m old’s venting effect with parting—line gating system is better. The impact […]

Study on production process of low-cost new wear-resistant grinding balls(1)

Abstract:The effects of chemical composition and heat treatment on properties of the wear-resistant grinding balls were studied through hardness and impelling strength test, metallographic structure analysis. The study used an orthogonal test instead of a fixed variable method for a shorter experimental cost and time. The experimental results show that the wear-resistant grinding balls show […]

Casting Production of Chrome Series Cast Iron Grinding Balls (1)

ZHANG Zhou1,LUO You-gen2,YING Gen-peng3 (1.Hangzhou Xuelin Science- Technology Development Service, Hangzhou 310012, China; 2. Longyou Hengshan Steel Ball Factory, Longyou 324406, China; 3. Hangzhou Aobao Chemical Co. Ltd., Hangzhou 310012, China) Abstract:A brief introduction was made to the chemical compositions, matrix structure, mechanical properties, and melting process of chromium series cast iron grinding balls. The […]

Study on the application of high chrome grinding balls instead of low chrome grinding balls in molybdenum ore (1)

Abstract: To solve the problem that the ball unit consumption is too high and the particle size of grinding products shifts to coarse size after the reformation of the grinding system and the optimization of the ball diameter ratio in a molybdenum concentrator. The comparison of chemical composition and mechanical properties between High Chrome Grinding […]

Nine factors of casting porosity formation and 5 improvement measures of process (2)

1) The technological measures to prevent subcutaneous stomata mainly include: 2) Desulfurization treatment. The so-called desulphurization, that is, as far as possible, the sulfur in the molten iron is transferred to the slag, and then eliminated, the less FeS in the molten iron, the higher the desulphurization efficiency, appropriately increasing the basicity of the desulphurized […]