Insert casting forming method of single-armed pipe

Abstract

An insert cast forming method of a single-armed pipe comprises the steps of preparing an insert casting pipe, preparing a sand core, molding, painting, pouring and mold dismantling. The insert casting forming method of the single-armed pipe has the following benefits: the inner wall of a single-armed oil pipe is formed by the insert casting pipe, one end of the insert casting pipe is fixed through a sand mold, the outer wall of the insert casting pipe fuses in and is mixed with high temperature liquid iron, so that the overall insert casting pipe and a casting body are integrally cast formed, the forming problem of the oil pipe due to a fine inner wall is solved, that a long oil pipe is easy to bend and crack under the self gravity function during the casting process is overcome by filling the insert casting pipe with steel grit and silica sand and mounting a clamping plate for fixation, and meanwhile the problem that a regional part of the oil pipe is thin-walled and easy to deform due to that the sand core is easy to float upward during the pouring process is solved.

Description

technical field [0001] The invention relates to the technical field of insert casting, in particular to an insert casting method for a one-armed pipe. Background technique [0002] Casting refers to melting solid metal into a liquid and pouring it into a mold of a specific shape, and waiting for it to solidify to obtain a casting of the desired shape. For sand core casting, in order to obtain the required castings, it is necessary to make a mold in advance, then use the mold to make a sand core and sand mold, and assemble the sand core into the sand mold, thus forming a cavity with the same structural size as the part. The molten metal is poured into the cavity, and after the molten metal is solidified, it becomes a casting of the desired shape. [0003] However, for some intake cylinder castings, there are large single-arm oil pipes in their structure. This oil pipe is a slender pipe with a long length. During the core-making process, the sand core is easy to bend and crac...

AI Technical Summary

Problems solved by technology

[0004] In view of this, in view of the above shortcomings, a method is proposed that can not only solve the problems that the sand core is easy to bend and crack under the action of its own weight, easy to sinter the sand core, and the inner wall of the tubing is not smooth during the core making process, but also solve the problem of sand core floating. Thin-walled or even skin-penetrated one-armed tube insert casting method

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