37results about How to "High strength wear resistance" patented technology

At present, a bit tooth is prepared from an alloy-structure steel material; because the alloy-structure steel has low rigidity and is not wear-resistant, a hard alloy cylindrical tooth is broken and falls off early; the service efficiency of the precious hard alloy cylindrical tooth is only 30 percent, and the waste is great; a diamond cylindrical tooth prepared from a superhard material has higher requirement on wear resistance of the bit tooth; the upper end of the bit tooth is provided with a hard alloy sleeve to solve the problem of low wear resistance, but the hard alloy sleeve is broken after being impacted, and cannot protect the diamond cylindrical tooth; moreover, the hard alloy sleeve is high in price and the waste is great. The invention adopts a technical scheme that: a novel-structure wear-resistant bit tooth is characterized by consisting of a bit tooth made of alloy-structure steel, and a wear-resistant body at the upper end of the bit tooth made of the alloy-structure steel, wherein the wear-resistant body is made of die steel or high-speed steel. The hard alloy cylindrical tooth or diamond cylindrical tooth can be effectively protected; and the novel-structure wear-resistant bit tooth is widely applied to coal mines, metallurgy and tunnel engineering.

The invention discloses an artificial turf with a diffuse reflection function. The artificial turf with the diffuse reflection function comprises a bottom base cloth, artificial fiber grass clusters and an adhesive layer. The artificial fiber grass clusters are arranged on the bottom base cloth, the adhesive layer is arranged at the lower end of the bottom base cloth, each cluster of bottom base cloth is composed of multiple grass filaments and a fixing base plate, a base body is further laid on each artificial fiber grass cluster, a non-woven fabric layer is further arranged between each base body and the bottom base cloth, a glass fabric layer is further arranged at the lower end of the adhesive layer, each base body is lattice structure formed by interweaving crisscross braided threads, the artificial fiber grass clusters are inserted and planted in the lattices of the base bodies, the non-woven fabrics layer is formed by overlaying three layers of structures, the second layer is a melt-blowing cloth, and the first layer and the third layer are spunbonded nonwovens. The invention further designs a preparation method of the artificial turf with the diffuse reflection function. The artificial turf is simple in structure, has high temperature resistance, abrasion resistance and good diffuse reflection functions, and is long in service life, convenient to produce and manufacture, low in production energy consumption, and free of environment pollution.

The invention relates to a novel combined filtering unit which comprises a square barrel, a feeding port, a top-layer filter screen, a middle-layer filter screen, a bottom-layer filter screen, rotating shafts, supporting pieces and a discharge port. The square barrel is made of stainless steel materials and used for providing a mineral filtering channel; the feeding port is located in the upper portion of the square barrel, and minerals can enter the barrel from the feeding port; the top-layer filter screen, the middle-layer filter screen and the bottom-layer filter screen are located at the upper end, middle end and lower end of the barrel respectively, one side of the top-layer filter screen, one side of the middle-layer filter screen and one side of the bottom-layer filter screen are linked to the rotating shafts on the wall face of the rectangular filtering unit, the other side of the top-layer filter screen, the other side of the middle-layer filter screen and the other side of the bottom-layer filter screen are supported through the supporting pieces, and all the filter screens are located on the horizontal direction; the rotating shafts are fixedly arranged on the wall face of the square barrel and serve as movable rotating shafts of the filter screens; the discharge port is located in the bottom of the square barrel, and materials are discharged from the discharge port. A plurality of filter screens with different meshes are arranged in the novel combined filtering unit, the minerals can be separated in a multi-grade mode in the different filter screens, and the novel combined filtering unit has the advantages of being high in abrasive resistance, good in adjustment performance, simple in structure, and convenient to manufacture.

The invention discloses a compact bearing high-pressure jet grouting drill bit. The compact bearing high-pressure jet grouting drill bit comprises a drill rod body and a drill bit body. The drill rodbody is of a shaft-shaped structure. A connecting block is fixed to the bottom of the drill rod body, and the drill rod body and the connecting block are integrally formed through casting. A jet grouting water conveying channel is formed in the center of the interior of the drill rod body. The compact bearing high-pressure jet grouting drill bit is simple and reasonable in structure, jet groutingcutting at the drilling position can be achieved through the arrangement of a jet grouting compact high-pressure cutting tool bit and a nozzle at the front end of the drill bit body, a first cutting tool bit and a second cutting tool bit are used in cooperation, the first cutting tool bit cuts the outer ring of the drilling position, the second cutting tool bit cuts the inner ring of the drillingposition, and therefore the cutting speed and effect during drilling are improved; and due to the arrangement of a lateral nozzle on the outer side of the drill rod body and a nozzle at the front end,a coaxial and non-concentric cutting nozzle process is adopted, high-pressure jet cutting can be conducted on the side wall of a drilled hole and the front end of a drill bit at the same time, and the high-pressure jet grouting effect is improved.

The invention discloses an SiC / Si3N4 composite ceramic material with small thermal expansion coefficient, low porosity, good thermal shock stability and wear resistance, excellent copper slag, aluminum slag and chemical gas permeation resistance, good integrity and long service life and a preparation method thereof. According to the invention, a raw material of the SiC / Si3N4 composite ceramic material is prepared by the following steps: drying and grinding a waste residue obtained by precipitating a polycrystalline silicon slicing waste liquid, carrying out nitridation treatment at 1100-1300 DEG C, adding a certain amount of SiC as a supplementary material, adding a composite additive and water, carrying out pouring, carrying out maintaining at normal temperature, and carrying out heatingand baking at 200-300 DEG C. The SiC / Si3N4 composite ceramic material not only prolongs the production chain of the polycrystalline silicon industry, but also solves the bottleneck problem of development of refractory materials in the non-ferrous metal smelting industry, and is easy for large-scale industrial popularization and application and for industrialization.

The invention relates to the field of plastic pipes, and provides a UHMWPE composite double-wall corrugated pipe, which comprises an inner wall and an outer wall. The inner wall is prepared from the following raw materials in parts by weight: 100 to 120 parts of low-density polyethylene, 3 to 5 parts of color master batch, 4 to 6 parts of a moisture absorbent and 4 to 6 parts of antioxidant master batch. The outer wall is prepared from the following raw materials in parts by weight: 30 to 40 parts of ultra-high molecular weight polyethylene, 70 to 80 parts of high-density polyethylene, 10 to 20 parts of reinforced master batch, 1 to 2 parts of a nucleating agent, 3 to 5 parts of black color master batch, 4 to 6 parts of antioxidant master batch and 4 to 6 parts of a moisture absorbent. According to the UHMWPE composite double-wall corrugated pipe, the ring stiffness and the wear resistance are improved, and the application field of the pipe is expanded.

The invention discloses aging-resistant butyronitrile emulsion adhesive for non-woven fabrics. The aging-resistant butyronitrile emulsion adhesive comprises, by weight, 24-50 parts of nitrile rubber, 8-10 parts of ethylene propylene diene monomer rubber, 16-25 parts of phenolic resin, 50-80 parts of ethyl alcohol, 8-15 parts of borax, 10-15 parts of carbon black, 8-15 parts of triphenyl phosphate, 6-12 parts of zinc oxide, 0.8-1.8 parts of oleic acid, 3-8 parts of anti-aging agents and 2-8 parts of coupling agents. The invention further provides a method for preparing the aging-resistant butyronitrile emulsion adhesive for the non-woven fabrics. The aging-resistant butyronitrile emulsion adhesive for the non-woven fabrics and the method have the advantages that the aging-resistant butyronitrile emulsion adhesive is high in adhesive strength and excellent in insulation and aging-resistant performance; the triphenyl phosphate is added into the aging-resistant butyronitrile emulsion adhesive in a formula, accordingly, the stability, the flame retardance and the antioxidant property of the aging-resistant butyronitrile emulsion adhesive can be effectively improved, and the aging-resistant butyronitrile emulsion adhesive has excellent light stability functions and is excellent in toughness; raw materials for the aging-resistant butyronitrile emulsion adhesive are safe and are free of pollution, processes are easy to implement, production procedures are environmentally friendly, the aging-resistant butyronitrile emulsion adhesive is low in preparation cost, and accordingly the aging-resistant butyronitrile emulsion adhesive and the method can be widely applied.