Forming method of hard alloy threaded hole

A technology of cemented carbide and forming method, applied in metal processing equipment, tangent devices, manufacturing tools, etc., can solve the problems of high processing difficulty, high cost and high hardness, and achieve the effect of avoiding processing difficulty
CN107695618AInactive Publication Date: 2018-02-16九江金鹭硬质合金有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
九江金鹭硬质合金有限公司
Publication Date
2018-02-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a forming method of a hard alloy threaded hole. The forming method of the hard alloy threaded hole is characterized by comprising the following steps of preparing materials, wherein PEG is used as a forming agent, raw materials are ground with ethyl alcohol, and after spray drying is conducted, a mixture is generated; conducting mold pressing, wherein compression molding isconducted on the mixture; conduct semi-machining, wherein through a numerical control milling machine or a lathe or a machining center, a dedicated cutter of a special material is used, accurate thread dimension calculation is conducted, and then a threaded hole of a fixed parameter is machined on the pressed blank; and conducting sintering, wherein the needed threaded hole is obtained through sintering formation finally. The forming method of the hard alloy threaded hole has the beneficial effects that through accurate pressed blank shrinkage coefficient control, inner threads are machined on the pressed blank, the machining difficulty existing when the alloy threaded hole is machined after sintering is avoided, and a scheme is provided for machining of the hard alloy threaded hole.
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Description

technical field

[0001] The invention relates to the field of thread processing and manufacturing, in particular to a method for forming cemented carbide threaded holes. Background technique

[0002] With the development requirements of modern industry, threads are widely used in connection, sealing, transmission, fastening and other aspects. Various structural parts and wear-resistant parts produced with cemented carbide are also more and more threaded. However, cemented carbide has the characteristics of high hardness and difficult processing. EDM, grinding and other processing methods are used for threads. The processing is difficult and the cost is high. With the development of semi-processing forming technology, it is possible to turn and mill the compact, realize semi-processing forming of non-precision threads, and semi-processing prefabrication of precision threads, which greatly improves the processing efficiency of cemented carbide threads and reduces Processing c...

Claims

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