Core assembly molding method for large curved-surface shell casting
A core molding and casting technology, which is applied in the direction of cores, molds, mold components, etc., can solve the problems of hidden safety hazards, difficult production, high cost, etc., to improve operational safety, reduce production costs and operational difficulties , the effect of avoiding casting defects
Pending Publication Date: 2022-03-01
宜宾普什联动科技有限公司
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Problems solved by technology
[0004] In order to overcome the shortcomings of the existing large-scale curved surface shell castings such as difficult production, high cost and potential safety hazards, the technical problem to be solved by the present invention is to provide an easy-to-implement method for forming cores of large curved surface shell castings
Method used
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Embodiment 1
[0044] According to the core assembly molding method mentioned above in this application, a certain type of compressor shell is cast.
[0045] Step 1: Design the sand core positioning cavity. According to the size of the sand core positioning cavity, select the appropriate tire model plate for assembly. During operation, first place the tire mold on the sand mold 2 that has been prepared in advance and measured by the infrared level, and then Use the sand scraping molding method to scrape it out according to the shape of the tire mold, and finally wait for the molding to solidify and take out the tire membrane to form a sand core positioning cavity 1, as shown in figure 1 shown;
[0046] Step 2: Sand core design in the inner cavity, such as figure 2 As shown, according to the foundation and processing surface of the casting inner cavity, the inner cavity sand cores are divided into 9 pieces, of which 1#, 2#, 6#, 7#, 8# and 9# sand cores are the basic types, and the middle 3#...
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Abstract
The invention discloses a core assembly molding method of a large curved surface shell casting in the technical field of casting, which comprises the steps of sand core positioning cavity design, inner cavity sand core design, peripheral sand core design, sand core pre-assembly, sand core formal assembly and the like. According to the core box, the size and the mass of the mold and the sand mold are smaller, the manufacturing cost and the operation difficulty of the core box are greatly reduced, the operation safety is improved, and the damaged sand core can be conveniently and independently manufactured again; when the sand core is assembled, the sand core positioning cavity is utilized, the inner cavity sand core can be rapidly and accurately put into the cavity, and it is guaranteed that the situation that the axial size of a curved surface shell casting, needing to be provided with a shaft and a bearing, of the inner cavity does not deviate, machining cannot be conducted, and scrapping is caused is avoided; and formal assembly is carried out after marking, so that the assembly efficiency and precision are improved, and the sand mold quality is ensured.
Description
technical field [0001] The invention relates to the field of casting technology, in particular to a method for forming cores of large curved shell castings. Background technique [0002] The curved shell is an efficient and energy-saving equipment for conveying and increasing the gas pressure, and it belongs to the technology-intensive turbomachinery. With the rapid development of various industries across the country and the large-scale process equipment, the demand for this mechanical equipment is increasing, and it is widely used in power plants, pharmaceuticals, metallurgy, cracking, blast furnace gas and other industries. Before this century, there were no mature energy-saving equipment for conveying and increasing the pressure of gas in China, and mainly relied on imported equipment from Japanese companies such as Mitsubishi, Mitsui, Sulzer, and DEMAG, which were expensive, and the purchase of spare parts and the long cycle of accident handling severely restricted them...
Claims
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Login to View More IPC IPC(8): B22C9/10
CPCB22C9/10B22C9/108
Inventor 宁显润高超黄鹏鲁晨光任良敏陈扬
Owner 宜宾普什联动科技有限公司