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Steel forging and pressing process

A steel and forging technology, applied in the direction of metal processing equipment, etc., can solve the problems of many hot forging processes, poor workpiece precision, decarburization and burning loss, etc., and achieve the effect of simple and feasible process, improved internal quality and improved precision

Inactive Publication Date: 2017-05-31
王丽萍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many hot forging processes, the precision of the workpiece is poor, the surface is not smooth, and the forging is prone to oxidation, decarburization and burning.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The invention provides a steel forging process, which comprises the following steps:

[0018] 1) Heat treatment of the steel to be processed;

[0019] 2) The heated steel is subjected to axial extrusion and axial elongation.

[0020] The specific implementation of said step 1) is:

[0021] 1.1) The furnace temperature is 60 degrees;

[0022] 1.2) Rapidly raise the temperature to 950° ± 15°, the range of the rapid temperature rise is between 40° and 50° per hour;

[0023] 1.3) Slowly raise the temperature to 1300° ±10°, the range of the slow temperature rise is not higher than 60° per hour;

[0024] 1.4) Keep warm for 30 to 50 minutes;

[0025] 1.5) Baked.

[0026] In the specific application of the present invention, the range of rapid heating can be fine-tuned according to different steel types, for example, 40°, 45° or 48° per hour can be used;

[0027] 2.3) Slowly raise the temperature to 1300° ±10°, the range of the slow temperature rise is not higher than 60°...

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PUM

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Abstract

The invention relates to a steel forging and pressing process. The steel forging and pressing process comprises the following steps that (1) steel needing to be processed is heated; and (2) the heated steel is axially extruded and elongated. The steel forging and pressing process has high process precision, good surface quality and simple and reliable casting process.

Description

technical field [0001] The invention belongs to the field of metal forging, and relates to a steel forging process. Background technique [0002] Forging is a processing method that uses forging machinery to apply pressure to metal blanks to cause plastic deformation to obtain forgings with certain mechanical properties, certain shapes and sizes. It is one of the two major components of forging (forging and stamping). Forging can eliminate defects such as as-cast porosity produced in the metal smelting process and optimize the microstructure. At the same time, due to the preservation of complete metal flow lines, the mechanical properties of forgings are generally better than castings of the same material. For important parts with high loads and severe working conditions in related machinery, forgings are mostly used, except for plates, profiles or weldments that can be rolled with simpler shapes. [0003] During the forging process, forging can compact or weld defects such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00B21J1/06
CPCB21J5/00B21J1/06
Inventor 王丽萍
Owner 王丽萍