Process for machining piston skirt

A processing technology and piston skirt technology, applied in the field of piston skirt processing technology, can solve the problems of inaccurate process requirements, insufficient piston precision, poor product quality, etc., and achieve the effect of rigorous process flow, high product quality, and high processing precision.

Inactive Publication Date: 2011-10-12
DALIAN BINCHENG PISTON MFG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional piston skirt processing technology, because the process flow is not fine enough, and the process requirements in the heat treat

Method used

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  • Process for machining piston skirt
  • Process for machining piston skirt

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Example Embodiment

[0018] Such as figure 1 As shown, the piston skirt processing technology of the present invention includes the following steps: step a, modeling, the piston skirt adopts a sand mold casting process, the integrity of the mold and its chilled iron should be checked before production, and the larger deformed chilled iron should be repaired. It can be used. The bottom re-pouring system is adopted. The model (including bottom box and upper box) is made as required, painted with paint, and placed in classification; step b, the sand core of the piston skirt is composed of a main core and a side tie core , The core box and mold should be carefully checked before production, and the production can be put into production after they are correct. The pouring system is hand-made with sodium silicate sand. The main core and side tie cores are made of self-hardening sand. After the two sand cores are made, paint Lead powder paint, enter the kiln for drying, the kiln temperature is 130~150℃, t...

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PUM

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Abstract

The invention discloses a process for machining a piston skirt. The process comprises the following steps of: a, shaping: checking the completeness of a die and a chilling block of the die before production; b, manufacturing a core which consists of a body core and a side binding core; c, smelting: when the temperature of a furnace is raised to 1,250 DEG C, sampling and testing, and adjusting components in the furnace; and when the temperature of the furnace is up to 1,520+/-10 DEG C, cutting off power and standing for preparation; d, closing a box and pouring: closing the box, fastening a box clamp, placing a pouring cup, pouring by using quantitative pouring ladles and preparing to lead air out during pouring, wherein the pouring speed is 7 to 9S and the pouring temperature is 1,430 to 1,400 DEG C; e, opening the box and cleaning: tapping a casting by using a hammer, taking a sand core out, removing a water gap and a dead head, and shoveling fins, flying edges and burrs of the casting; f, performing thermal treatment, normalizing treatment and tempering treatment on the casting; g, polishing the casting, and performing shot blasting and inspection; and h, performing aging treatment. The process for machining the piston skirt is high in machining precision, strict in process flows and higher in machined product quality.

Description

technical field [0001] The invention relates to a piston skirt processing technology. Background technique [0002] The traditional piston skirt processing technology, because the process flow is not fine enough, and the process requirements in the heat treatment of castings are not accurate, resulting in insufficient precision of the piston processed by this processing technology, and poor product quality. Contents of the invention [0003] The purpose of the present invention is to provide a piston skirt processing technology. [0004] The technical solution adopted by the present invention to achieve the above object is: a piston skirt processing technology, comprising the following steps: [0005] Step a, modeling, check the integrity of the mold and its cold iron before production, and for those with large deformation, the cold iron can be used after repairing; [0006] Step b, core making, which is composed of main body core and side binding core; [0007] Step c,...

Claims

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Application Information

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IPC IPC(8): F16J1/00
Inventor 邵其浩
Owner DALIAN BINCHENG PISTON MFG
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