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Molding process of chrome steel ring piece

A molding process and technology of ring parts, which is applied in the field of forming technology of chrome steel ring parts, can solve the problems of unfavorable follow-up ring forming, time-consuming and material-consuming, production difficulty, etc., achieve good tensile strength, improve production efficiency, The effect of improving plasticity

Active Publication Date: 2016-06-01
ANHUI TONGSHENG RING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Direct forging of ring-shaped cylinders without any pre-treatment is not conducive to the subsequent ring forming, which brings certain difficulties to production; while free forging uses impact force or pressure to make the metal freely deform in all directions between the upper and lower anvil surfaces. A processing method to obtain forgings of required shape and size and certain mechanical properties without any restrictions. These processes are labor-intensive and material-intensive, with high production costs and low production efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A forming process for a chrome steel ring, comprising the following steps:

[0021] S1. Blanking: sawing the chrome steel ingot into a rectangular cuboid blank with a square bottom, the ratio of the length and width of the blank to the diameter of the ring is 1.1, and the ratio of the height of the blank to the height of the ring is 1.05;

[0022] S2. Preheating: the preheating temperature of the blank is 420°C, and the time is 10 minutes;

[0023] S3. Preforming: Repeated forging along the three-dimensional orthogonal surfaces of the blank cuboid X, Y, and Z in the order of X→Y→Z→X; note that each surface is forged once as one pass, and the deformation amount of each pass is 3%, the reduction rate is 2.5mm / s; after every 6 passes, it is returned to the furnace at 420-450°C for 10 minutes, and a total of 4×8 passes are forged, and the reduction of each pass is 8%. Steel cake;

[0024] S4. Forming a ring: Use a forging press to squeeze a round hole in the center of the...

Embodiment 2

[0027] A forming process for a chrome steel ring, comprising the following steps:

[0028] S1. Blanking: sawing the chromium steel ingot into a rectangular cuboid blank with a square bottom, the ratio of the length and width of the blank to the diameter of the ring is 1.2, and the ratio of the height of the blank to the height of the ring is 1.1;

[0029] S2. Preheating: the preheating temperature of the blank is 430°C, and the time is 15 minutes;

[0030] S3. Preforming: Repeated forging along the three-dimensional orthogonal surfaces of the blank cuboid X, Y, and Z in the order of X→Y→Z→X; note that each surface is forged once as one pass, and the deformation amount of each pass is 4%, the reduction rate is 3mm / s; after every 6 passes, it is returned to the furnace at 420-450°C for 15 minutes, and a total of 4×10 passes are forged, and the reduction of each pass is 10%, and the round steel is obtained. cake;

[0031] S4. Ring forming: use a forging press to squeeze a round...

Embodiment 3

[0034] A forming process for a chrome steel ring, comprising the following steps:

[0035] S1. Blanking: sawing the chromium steel ingot into a rectangular cuboid blank with a square bottom, the ratio of the length and width of the blank to the diameter of the ring is 1.3, and the ratio of the height of the blank to the height of the ring is 1.15;

[0036] S2. Preheating: the preheating temperature of the blank is 440°C, and the time is 18 minutes;

[0037] S3. Preforming: Repeated forging along the three-dimensional orthogonal surfaces of the blank cuboid X, Y, and Z in the order of X→Y→Z→X; note that each surface is forged once as one pass, and the deformation amount of each pass is 4%, the reduction rate is 3.2mm / s; after every 9 passes, it is returned to the furnace at 420-450°C for 18 minutes, and a total of 4×8 passes are forged, and the reduction of each pass is 8%. Steel cake;

[0038] S4. Ring formation: use a forging press to squeeze a round hole in the center of t...

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Abstract

The invention provides a molding process of a chrome steel ring piece and relates to the technical field of molding of metal ring pieces. The molding process includes the five steps of blanking, pre-heating, pre-molding, ring formation and cutting. The molding process is optimized and combined with the special physicochemical properties of a steel material, so that the production cost is further lowered and the production efficiency is improved. The process is simple and high in adaptability.

Description

technical field [0001] The invention relates to the technical field of forming metal rings, in particular to a forming process of chrome steel rings. Background technique [0002] Ring parts are often used as finished products or raw materials in aerospace, automobiles, trains, ships, machinery, wind power and other industrial fields. They are very important mechanical parts. In the prior art, the method adopted for manufacturing the ring is to first form the ring by mechanical processing or directly forge the ring on a hydraulic press by using a free forging method. Direct forging of ring-shaped cylinders without any pre-treatment is not conducive to the subsequent ring forming, which brings certain difficulties to production; while free forging uses impact force or pressure to make the metal freely deform in all directions between the upper and lower anvil surfaces. A processing method for obtaining forgings of required shape and size and certain mechanical properties wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00C21D8/00
CPCB23P15/00C21D8/005
Inventor 蔡锟赵卓
Owner ANHUI TONGSHENG RING
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