40results about How to "Strong grinding force" patented technology

The invention relates to a deburring method for the pressure regulating cavity of an oil injector body and the device, which is characterized in adopting grinding medium slurry jet for deburring. The method is as follow: a high pressure generator is used for generating high-speed jet of grinding medium slurry, wherein, the grinding medium particles with greater kinetic energy in the grinding medium slurry jet has strong grinding force; the burr and oxide on the channel inner wall of the pressure regulating cavity of the oil injector body are removed with the eroding and grinding function of the grinding medium particles. The device comprises a generator of high pressure slurry jet, a nozzle reciprocating movement mechanism, a workpiece rotary mechanism and a feed mechanism. The deburring method has the advantages of high processing efficiency and high processing quality together with the device.

The invention discloses a polishing wheel. The polishing wheel comprises the following raw materials including silicon carbide, brown aluminium oxide, industrial salt and resin-oatmeal. The invention further discloses a preparation method for the polishing wheel. The polishing wheel adopts resin binder, grinding materials are formed by choosing and compounding the silicon carbide and the brown aluminium oxide, since the two grinding materials are chosen and mixed, the relationship between the hardness and the toughness of the grinding materials can be adjusted, the polishing wheel has the properties and advantages of the two grinding materials, and therefore the grinding performance of the polishing wheel is improved, and the polishing wheel has the advantages of being high in hardness, good in self-sharpening performance, strong in grinding force and low in heat production amount; meanwhile, the preparation technology adopts the high-temperature pressing technology, the mechanical strength of the polishing wheel is further strengthened, and the grinding efficiency of the polishing wheel to workpieces is obviously improved. According to the production formula method for the polishing wheel, the produced polishing wheel is good in grinding performance, high in mechanical strength and long in service life.

The invention discloses a composite bond grinding wheel for large-scale silicon carbide substrate processing and a preparation method thereof, in particular to a compound bond superhard material grinding wheel formula and a preparation method for silicon carbide semiconductor material processing. The formula mainly consists of the following components: 25-45% diamond abrasive, 25-40% pre-alloyed powder, 8-20% polyphenylene sulfide, 10-18% zinc oxide whisker, and 8-22% SG abrasive. The preparation of the invention adopts polyphenylene sulfide and zinc-copper alloy powder as a composite binder system, and the binder system has strong holding force on abrasives, resists high grinding resistance of large-sized silicon carbide, and has strong grinding force. Iron, aluminum, etc. refine the grain structure of the alloy system, increase the brittleness, and improve the grinding sharpness of the grinding wheel. At the same time, the use of whiskers can increase the isotropy of the microstructure of the grinding wheel layer, obtain a better homogeneous state, and solve the problem of grinding stability of silicon carbide substrates. It completely solves the problem of processing large-size silicon carbide substrates.

The invention discloses an extruding and grinding type soft rock crusher, which belongs to the field of rock crushing equipment. It includes a frame combination plate, a vibrating crushing device A, a vibrating crushing device B, a vibrating crushing device C, a rotary extrusion crushing device A, a rotary extrusion crushing device B and a conical feeding port; Device B and vibrating lithotripsy device C have the same structure as vibrating lithotripsy device A, including metal coil spring A, guide column, metal coil spring B, guide sleeve and vibrating plate; Extrusion crushing device B has the same structure, including a rotating shaft bracket, an extruding rotating shaft, a synchronous gear, a sliding sleeve and a conical extruding plate. The invention is a simple and reasonable structure, adopts two modes of vibration and extrusion grinding to destroy soft rock, and has better crushing efficiency and crushing effect.

The invention discloses a production process for high-strength green silicon carbide micropowder and a special grinder for the high-strength green silicon carbide micropowder. The special grinder comprises a horizontal mill body (1), a slurry circulation pump (2), an iron remover (4) and a settling tank (5), wherein the discharge hole of the horizontal mill body (1) is communicated with the feeding hole of the settling tank (5) by virtue of a slurry conveying pipeline A (3), the iron remover (4) is arranged between the slurry conveying pipeline A (3) and the feeding hole of the settling tank (5), the discharge hole of the settling tank (5) is communicated with a feeding hole of the horizontal mill body (1) by virtue of a slurry conveying pipeline B (3'), and a slurry flow control valve (8) is arranged on the slurry conveying pipeline B (3'). According to the production process for high-strength green silicon carbide micropowder and the special grinder disclosed by the invention, the problem of the traditional green silicon carbide micropowder that the strength and the cutting force are influenced as the particle sizes of the traditional green silicon carbide micropowder are different is solved, and the problem of the traditional grinder that in the grinding process, powders in different particle sizes are mixed and ground to cause excessive grinding is also solved.

The invention relates to a diamond super micro powder and a preparation method thereof. Diamond micro powder which is in single crystal and synthesized by static pressure method is taken as raw material, detonation impacting and separation purification are carried out, thus obtaining the super micro powder with irregular crystal form appearance topography, micro visible crystal interior crack andstructure defect and particle size peak value of 10-1000nm, and particle surface and crystal crack interface of the super micro powder are associated with non diamond carbon accounting for 1-30% of total mass of the powder. The diamond micro powder provided by the invention has stable properties and good grinding force, better surface evenness can be obtained when being applied to precision surface planarization processing, thus achieving the aim of being equivalent to the effect of expensive products of multi-crystal diamond micro powder and nano diamond micro powder which are generally usedat present; the method of the invention can process massive diamond micro powder only using a small amount of explosive, incident cost is low while product performance is greatly improved, thus having obvious cost advantage.

A high-efficiency diamond bit comprises a base and a tool bit fixedly disposed on the base. The tool bit consists of an inner sharp blank, an outer sharp blank and a wear-resistant hard blank sandwiched between the inner sharp blank and the outer sharp blank, and diamond particles and pre-alloyed powder are sintered after being mixed to form each of the inner sharp blank, the outer sharp blank and the wear-resistant hard blank. The tool bit is a sandwich type structure, namely, the wear-resistant hard blank is sandwiched between the inner sharp blank and the outer sharp blank, and excellent sharpness of the top of the tool bit is improved. In addition, when the tool bit grinds, the hardness of the inner sharp blank and the hardness of the outer sharp blank are lower than the hardness of the wear-resistant hard blank, accordingly, a triangular pointed edge can be constantly formed on the top of the tool bit, an excellent self-sharpening performance and excellent sharpness of the cutting head are constantly kept, and cutting force is high.