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Manufacturing method of sand casting machine tool

A manufacturing method and sand casting technology, applied in the direction of manufacturing tools, cores, casting molds, etc., can solve the problems of increased production cost, easy generation of pores, and high defective rate, and can ensure the size of the machine tool, avoid shaking, and have a smooth surface. Effect

Active Publication Date: 2019-02-19
浙江品川精密机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the surface of machine tools made by sand casting is usually relatively rough, and porosity is prone to occur during the casting process, resulting in a high rate of defective products, and many reworked products in the later stage lead to increased production costs

Method used

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Embodiment Construction

[0019] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. Those skilled in the art can make modifications to this embodiment without creative contribution as required after reading this specification, but as long as they are within the rights of the present invention All claims are protected by patent law.

[0020] The manufacturing method of the sand casting machine tool includes 1. molding: after mixing sand, curing agent and resin through a sand mixer, it is imported into the mold frame, and the prefabricated machine tool model is placed in the mold frame before importing, so that after mixing The molded sand is solidified and formed in the mold frame, thus forming a shape suitable for the surface characteristics of the machine tool, and then the machine tool mold is taken out, and several independent small sand molds need to be made at the same time, and the sand mold is directly imported by the mol...

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Abstract

The invention discloses a manufacturing method for a sand mold casting machine tool. The main point of the technical scheme is the manufacturing method for the sand mold casting machine tool. The manufacturing method comprises the steps that mixed moulding sand is guided into a mould frame for fixing and forming, and a machine tool model is prefabricated in the mould frame; a plurality of independent sand mold moulds are arranged inside the mould frame, and flow channels allowing molten iron to flow are formed between every two adjacent sand mold moulds; the inner surface of the mould frame and the surfaces of the sand mold moulds are coated with fireproof coating agents in a flowing mode; the coating agents are mixed with alcohol and sintered on the surfaces of the sand mold moulds through ignition ; breathable through holes are formed in the side wall of the mould frame, and gas in the moulding sand is heated in the casting process and discharged through the breathable holes; and at the time of casting, the molten iron is cooled to 1360-1380 DEG C, then slowly guided into the molten iron flow channels, and the gas in the flow channels is ignited to be burned. The surface of the machine tool manufactured by the manufacturing method for the sand mold casting machine tool is smooth and level, air holes do not occur, and the rate of finished products is high.

Description

technical field [0001] The invention relates to a manufacturing method of a sand casting machine tool. Background technique [0002] In the prior art, the surface of the machine tool made by sand casting is usually relatively rough, and porosity is easily generated during the casting process, resulting in a high rate of defective products, and many reworked products in the later stage lead to increased production costs. Contents of the invention [0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method for manufacturing sand casting products, so that the surface of the machine tool after casting is relatively smooth and no air holes will be generated. [0004] In order to achieve the above object, the present invention provides the following technical solutions: a manufacturing method of a sand casting machine tool, comprising the following steps: introducing the mixed molding sand into a mold frame for fixed molding...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/22B22C9/02B22C3/00
CPCB22C3/00B22C9/02B22C9/22
Inventor 李华文
Owner 浙江品川精密机械有限公司
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