Wear-resistant casting process for chromium-white spheroidal graphite cast iron surface
A ductile iron and casting technology, which is applied in the direction of manufacturing tools, casting equipment, and process efficiency improvement, can solve problems such as short service life and poor wear resistance, and achieve simple and easy operation without increasing equipment and technology. Simple and easy to operate effect
Inactive Publication Date: 2020-11-27
晋城市金工铸业有限公司
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Problems solved by technology
[0005] The purpose of the present invention is to overcome the shortcomings of the prior art, provide a chromium-based whitening wear-resistant casting process on the surface of nodular cast iron, and solve the problem of poor wear resistance, short service life and frequent replacement of cast steel parts produced by the existing lost foam process and other technical issues
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[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0025] Such as Figure 1 to Figure 4 A kind of ductile iron surface chromium series whitening wear-resisting casting process shown, comprises the following steps:
[0026] 1) Manufacture the foam model of the part: Add styrene and methyl methacrylate copolymer to the pre-foaming machine for pre-foaming, and then foam molding in the molding mold according to the shape of the part. The part model of the technical requirements of the drawings;
[0027] 2) Preparation of chemically chilled alloy composite coating: 20-25 parts by weight of tellurium powder, 15-25 parts by weight of ferrochromium powder, 1.5-2.5 parts by weight of nickel powder, 4-5 parts by weight 50-60 parts by weight of industrial polyvinyl butyral and 50-60 parts by weight of industrial ethanol are evenly mixed to prepare gruel-like chemical chilled alloy composite coatings th...
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Abstract
The invention relates to a wear-resistant casting process for a chromium-white spheroidal graphite cast iron surface, and belongs to the technical field of lost foam casting. The invention mainly solves the technical problems that a cast steel component produced by a lost foam process is poorer in wear resistance, short in service life, frequent in replacement and the like. The invention providesthe technical scheme that the wear-resistant casting process for the chromium-white spheroidal graphite cast iron surface comprises the following steps of (1) manufacturing a lost foam compoment foammodel; (2) preparing a chemical chilling alloy composite coating; (3) painting the chemical chilling alloy composite coating; (4) drying; (5) dip-coating a refractory matter; (6) packing and modelling; (7) smelting and casting; (8) recycling molding sand; (9) cleaning a casting piece; and (10) carrying out heat treatment. The wear-resistant casting process for the chromium-white spheroidal graphite cast iron surface provided by the invention has the advantages of capability of effectively improving wear resistance, simple process, easiness in operation and the like.
Description
technical field [0001] The invention belongs to the technical field of lost foam casting, and in particular relates to a wear-resistant casting process of chromium system whitening on the surface of nodular cast iron. Background technique [0002] The lost foam casting technology is to bond and combine foamed plastic models with the same size and shape as the castings to form a model cluster, brush the refractory coating and dry it, bury it in dry quartz sand for vibration molding, and pour liquid metal under certain conditions. The method of vaporizing the model and occupying the position of the model, solidifying and cooling to form the required casting. Compared with the traditional casting technology, due to the use of highly gasified foam plastics to make the model, there is no need to take the mold and make the mold core, and there is no parting surface, so there is no flash or burr. This process completely abandons the traditional process. The unfavorable factors of ...
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IPC IPC(8): B22C7/02B22C9/04C21C1/10C22C33/08
CPCB22C7/023B22C9/04C21C1/10C22C33/08Y02P10/20
Inventor 王银花王喜春王瑨璐赵平敦马鹏雷
Owner 晋城市金工铸业有限公司