Cold and hot pressing one-step forming process for grinding wheel

Abstract

The invention relates to the technical field of cold and hot press molding, in particular to a cold and hot pressing one-step forming process for a grinding wheel. The cold and hot pressing one-step forming process comprises the following steps that 1, blending is performed; 2, mixing is performed; 3, grinding is performed; 4, primary cold pressing is performed; 5, secondary cold pressing is performed; 6, preheating is performed; 7, primary hot pressing is performed; and 8, secondary hot pressing forming is carried out after the temperature of a 3000t hot press is risen to 160 DEG C. In the step 2, materials are poured into a mixing mechanism according to a ratio, and the mixing mechanism is used for preliminarily crushing and mixing the materials; in the step 3, the mixed materials are poured into a grinding mechanism, and the mixed materials are ground for 5-8 h by using the grinding mechanism; and in the step 7, primary hot pressing is conducted by adopting the 3000t hot press. Thecold and hot pressing one-step forming process, is simple and easy to operate, environment-friendly and suitable for industrialization, the produced grinding wheel is high in hardness and sharp in abrasive grain, the thermal conductivity is good, the wear resistance is high, the loss of a binding agent is effectively avoided, and the hardness and the mechanical strength of the grinding wheel are improved.

Description

technical field [0001] The invention relates to the technical field of cold pressing and hot forming technology, in particular to a cold and hot pressing one-step forming technology of a grinding wheel. Background technique [0002] Grinding wheel is also known as bonded abrasive. Grinding wheel is a bonded abrasive with a certain shape and a certain strength that is consolidated by a bonding agent. It is generally composed of abrasive, bonding agent and pores. These three parts are often called fixed abrasives. The three elements of the abrasive tool are classified according to the different types of binders. The common ones are ceramic (binder) grinding wheels, resin (binder) grinding wheels, and rubber (binder) grinding wheels. Grinding wheels are the most used and the most widely used in abrasive tools. A kind of high-speed rotation during use, which can perform rough grinding, semi-finishing and fine grinding, grooving and cutting of the outer circle, inner circle, plan...

AI Technical Summary

Problems solved by technology

[0003] Ordinary grinding wheels are formed by direct hot pressing after cold pressing. The hardness of such grinding wheels is not high, mainly because part of the binder escapes from the grinding wheel blank under high pressure during the hot pressing process, which reduces the hardness of the grinding wheel. The hardness of the grinding wheel also reduces the mechanical strength of the grinding wheel, resulting in waste of materials and increasing the difficulty of the manufacturing process

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