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 […]
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2.1 High and low chrome balls contrast The production practice shows that the strength and wear resistance of the low chrome grinding balls are low and easy to be broken, which makes the broken ball rate and the out-of-round rate higher and has a particular influence on the grinding effect. The surface of high chrome […]
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 […]
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 […]
The subcutaneous blowhole is a common casting defect in wet-type Ductile Iron Castings, so it has a prevalent deficiency and is especially sensitive to thin-walled castings. The reason is that the thin-walled castings have a fast solidification speed. The gas can not form bubbles in time, and the thick-walled castings have a slow solidification speed […]
Grinding balls heat treatment machine is used to do the quenching, tempering process for the casting grinding media balls and cylpebs with daily processing 15-30tons. The heat treatment furnace is tunnel type, the workpieces are loaded in the baskets.
At the beginning of July, passed through almost half-year after signing the contract, tilting type heat treatment machine along with the other products, like mining used rollers, have dispatched to Shanghai port to Kenya company. The estimated delivery time is about 45days. Trust our client will be satisfied with our machine.
After the casting process drawing, the metal mold design can be carried out. The design content mainly includes determining the structure, size, core, exhaust system, and ejector mechanism of the metal mould. The designed metal mold should be simple in structure, convenient in processing, reasonable in material selection, safe and reliable
According to some characteristics of metal mold casting, the following points should be paid to when designing a gating system: The casting speed of metal is high, which is more than about 20% of the sand mold. Secondly, when the liquid metal is filled, the gas in the mold cavity should be removed smoothly, the […]
There are three types of parting surface: vertical, horizontal, and comprehensive (vertical, horizontal mixed parting, or curved surface parting). The principles for selecting the parting surface are as follows:
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