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Production process of sliced type centrifugal cast iron piston ring

A centrifugal cast iron and production process technology, applied in the field of piston rings, can solve the problems of poor metallographic structure, great influence on piston ring quality, easy ring breakage, etc., and achieve the effects of low cost, high production efficiency and stable elasticity

Inactive Publication Date: 2011-10-12
浙江台州金陶机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, sand boxes are still used to cast piston rings in the society. Due to the sand box casting piston rings have many pores and poor metallographic structure, slicing has a great impact on the quality of piston rings, and ring breakage is prone to occur.

Method used

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  • Production process of sliced type centrifugal cast iron piston ring
  • Production process of sliced type centrifugal cast iron piston ring

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Experimental program
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Embodiment Construction

[0017] The present invention will be further described below with specific embodiment in conjunction with accompanying drawing, see figure 1 :

[0018] The production process of the slice type centrifugal cast iron piston ring includes the following steps:

[0019] (1) Casting the cylinder blank of the piston ring, centrifugally pouring the cylinder blank on the centrifugal casting machine;

[0020] (2) Carry out the outer circle and the inner circle of the cylinder blank according to the size of the inner and outer circles of the piston ring;

[0021] (3) Slice the inner and outer cylinder blanks according to the thickness of the piston ring to form rings;

[0022] (4) on the special-purpose opening machine tool for piston rings, the circular ring made in step (3) is opened to form piston ring semi-finished products 2 by the piston ring size required by the cylinder bore;

[0023] (5) Set the piston ring semi-finished product 2 after the opening in step (4) on the oval out...

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Abstract

The invention relates to a production process of a sliced type centrifugal cast iron piston ring, belonging to the technical field of piston rings. The production process of the slice type centrifugal cast iron piston ring comprises the following steps of: (1) casting a cylindrical blank of the piston ring; (2) turning an excircle and an incircle of the cylindrical blank according to the dimensions of the incircle and the excircle of the piston ring; (3) slicing the cylindrical blank with the incircle and the excircle turned into rings according to the thickness dimension of the piston ring; (4) opening the rings manufactured in the step (3) to form piston ring semi-finished products according to the piston ring dimensions needed by a cylinder diameter on a special opening machine tool for the piston ring; and (5) sleeving the piston ring semi-finished products opened in the step (4) on a shaping cylinder for ellipse shaping. The production process disclosed by the invention has the technical advantages that after centrifugal casting, incircle and excircle turning, opening and heat shaping are adopted, the piston ring has the rigidity of HRB 95-HRB 104 degrees, high material bending strength, stable elasticity, high surface abrasion resistance and long practical life; in addition, the production process disclosed by the invention has the advantages of high production efficiency and low cost and is suitable for manufacturing the piston rings with different specifications.

Description

technical field [0001] The invention belongs to the technical field of piston rings, in particular to a production process of sliced ​​centrifugal cast iron piston rings. Background technique [0002] At present, the sand box is still used to cast piston rings in the society. Since the sand box cast piston rings have many pores and poor metallographic structure, slicing has a great impact on the quality of the piston rings, and ring breakage is prone to occur. Contents of the invention [0003] The object of the present invention is to provide a production process of a sliced ​​centrifugal cast iron piston ring with high yield, stable metallographic structure and uniform hardness. [0004] The purpose of the present invention is achieved like this: [0005] The production process of the slice type centrifugal cast iron piston ring includes the following steps: [0006] (1) Casting the cylinder blank of the piston ring, centrifugally pouring the cylinder blank on the cent...

Claims

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Application Information

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IPC IPC(8): B22D13/00
Inventor 蔡金榕江虹
Owner 浙江台州金陶机械制造有限公司
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