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Hard alloy nozzle and manufacturing method thereof
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A technology of cemented carbide and nozzles, which is applied in the field of cemented carbide nozzles and its manufacturing, which can solve the problems of poor nozzle stability and consistency and short service life, and achieve high spray stability and consistency, long service life and no pollution The effect of environmental safety
Inactive Publication Date: 2013-07-10
ZHEJIANG YIHUO TECH
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Problems solved by technology
[0003] The purpose of the present invention is to provide a cemented carbide nozzle and its manufacturing method, which can effectively solve the problems of poor stability and consistency and short service life of existing nozzles
Method used
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Embodiment 1
[0020] A cemented carbide nozzle, comprising cemented carbide powder and a binder, the volume ratio of the cemented carbide powder to the binder is 7:3, and the binder includes the following components, each component by weight The percentages are: medical paraffin 10%, ozokerite 15%, high-density polyethylene 55%, EVA resin 20%.
Embodiment 2
[0022] A cemented carbide nozzle, including cemented carbide powder and a binder, the volume ratio of the cemented carbide powder to the binder is 5:5. The binder includes the following components, each component is by weight percentage For: medical paraffin 17%, ozokerite 21%, high-density polyethylene 30%, EVA resin 32%.
Embodiment 3
[0024] A cemented carbide nozzle, comprising cemented carbide powder and a binder, the volume ratio of the cemented carbide powder to the binder is 6:4, and the binder includes the following components, each component by weight The percentages are: medical paraffin 13%, ozokerite 18%, high-density polyethylene 43%, EVA resin 26%.
[0025] A method for manufacturing a cemented carbide nozzle using the above composition ratio of the cemented carbide nozzle: comprises the following steps in sequence:
[0026] A. After mixing the cemented carbide powder and the binder evenly, put it into a two-roll rubber mixer, and repeatedly mix it at a temperature of 180°C for 2.5 hours to obtain a cemented carbide feed;
[0027] B. Place the cemented carbide feed material obtained in step A in an injection molding machine, and process it into a cemented carbide nozzle blank under the conditions of an injection temperature of 140°C, an injection pressure of 60MPa, and a mold temperature of 30°C...
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Abstract
The invention discloses a hard alloy nozzle. The hard alloy nozzle comprises hard alloy powder and an adhesive, wherein the adhesive comprises the following components in weight percentage: 10%-17% of medical paraffin, 15%-21% of ozocerite, 30%-55% of high-density polyethylene (HDPE) and 20%-32% of EVA (ethylene-vinyl acetate) resin. The manufacturing method of the hard alloy nozzle comprises thefollowing steps: evenly mixing the hard alloy powder with the adhesive, and then repeatedly mixing; then processing the obtained mixture by using an injection molding machine to form a blank; placingthe blank in tri-polyethylene for dissolving and degreasing; and finally sintering the blank in a vacuum furnace for to obtain the finished product. The hard alloy nozzle manufactured by the manufacturing method has the advantages of strong wear resistance, higher injection stability, better consistency and long service life; moreover, production cost is effectively lowered.
Description
technical field [0001] The invention relates to a cemented carbide nozzle and a manufacturing method thereof. Background technique [0002] The rapid development of modern industry requires a variety of injection devices. Various cleaning equipment in the machinery industry, spray dust removal in mining enterprises, spray cooling in the metallurgical industry, various coating lines in manufacturing industries such as motorcycles, bicycles, refrigerators, and washing machines. Sandblasting, high-pressure water spraying, etc. to beautify the surface of various objects all require a large number of nozzles. In the past, nozzles made of high-speed steel and other materials were not only difficult to process, but also had low hardness and poor wear resistance, resulting in poor spray stability and consistency, short service life, poor spray effect and high cost. Contents of the invention [0003] The object of the present invention is to provide a cemented carbide nozzle and ...
Claims
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Application Information
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