Furan self-hardening resin sand mold for producing integral casting axle case

A furan self-hardening and integral casting technology, which is applied in the field of casting sand molds to achieve the effects of reducing costs, improving service life and stabilizing production

Inactive Publication Date: 2011-03-30
FAW GROUP
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  • Abstract
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Problems solved by technology

After the size of the bridge increases, in the casting production process, if it i...

Method used

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Embodiment Construction

[0006] The present invention is further described below: the furan no-bake resin sand mold for the integral casting axle housing is characterized in that the former sand, the furan resin, and the curing agent are molded according to the following method in parts by weight: the former sand and the former sand amount 1.0 -1.5% furan resin, that is, the binder, is fully stirred in the sand mixer, and then 0.5-0.75% of the original sand is added to the boric acid, that is, the curing agent to mix evenly; when molding, put the mixed molding sand into the sand box and use The chemical method of resin and curing agent reaction is used for curing and molding, and the curing time is about 20-30 minutes.

[0007] During work, the sand mold 1 and the sand core 2 will be assembled and assembled according to requirements with furan resin self-setting sand, and then poured to form a casting 3 . The axle housing can be integrally cast.

[0008]

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Abstract

The invention relates to a furan self-hardening resin sand mold for producing an integral casting axle case, which is characterized in that raw sand, furan resin, and curing agent are molded by weight part according to the following methods of: stirring the raw sand and the furan resin sufficiently in a sand mixer, wherein the furan resin is 1.0-1.5% of the weight part of the raw sand, and the furan resin is cementing agent; adding boric acid, and mixing equally, wherein the boric acid is 0.5-0.75% of the weight part of the raw sand, and the boric acid is curing agent; putting the mixed molding sand in a sand box during the molding; and curing and molding for about 20-30 minutes by utilizing a chemical method of the reaction between the resin and the curing agent. The furan self-hardening resin sand mold for producing the integral casting axle case can improve the quality and the service life of the casting, stably produce qualified castings, and reduce the cost of the axle case assembly.

Description

technical field [0001] The invention relates to a furan no-hardening resin sand mold for producing an integral casting axle housing, belonging to the field of casting sand molds. Background technique [0002] Usually cast axle housings are cast with ordinary sand molds (that is, green mold sand that people often say). With the continuous improvement of the quality requirements for cast axle housings, it is now possible to solve the quality problems existing in the casting production and use of cast axle housings. Gradually change the original stamping and welding bridge and inner expansion bridge into integral casting axle housing. The so-called integral casting axle housing is to cast the original half shaft sleeve on the axle housing to make the size of the bridge longer. After the size of the bridge increases, in the casting production process, if it is produced by ordinary sand core casting, many technical and quality problems will occur. Ordinary green sand molding me...

Claims

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Application Information

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IPC IPC(8): B22C1/22B22C1/10B22C9/02
Inventor 孙长林
Owner FAW GROUP
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