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One-time hot rolling forming technology

A hot-rolled, one-time technology, applied in the field of material processing, can solve the problems of molecular structure damage, product material damage, channel damage, etc., and achieve the effect of simple process and excellent product performance

Active Publication Date: 2016-01-27
SHANDONG TIANDUN MINING EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The pre-embedded channel of the present invention is formed by hot rolling at one time, which ensures the performance and internal structure of the product. At present, most of them use hot rolling and then bending forming technology. This technology destroys the internal molecular structure of the product and damages the channel. Very large, the product material is greatly damaged, and the specification of the product cannot be guaranteed, and there are many defective products in the channel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Weigh the raw materials for preparing the product, iron powder: 90%-95%, zinc powder: 2%-3%, nickel powder: 1%-2%, chromium powder: 1%-2%, mix the raw materials; put the raw materials into In the mold, after the model is formed, spray it with paraffin wax; put the prepared mold into the sintering furnace for sintering; the sintering temperature is controlled at 1200-1300°C, and the sintering time is 1.5 hours; use the residual temperature of the sintered model for heat reduction Diameter and hot-rolled external thread; use the formed model for heat treatment; the heat treatment temperature is 800-1000 ° C, and the heat treatment time is 0.5-1 hour; a one-time hot-rolled product is obtained.

Embodiment 2

[0021] Weigh the raw materials for preparing the product, iron powder: 90%-95%, zinc powder: 2%-3%, nickel powder: 1%-2%, chromium powder: 1%-2%, mix the raw materials; put the raw materials into In the mold, after the model is formed, spray paraffin wax; put the prepared mold into the sintering furnace for sintering; the sintering temperature is controlled at 1200-1300°C, and the sintering time is 2 hours; use the residual temperature of the sintered model for heat reduction Diameter and hot-rolled external thread; use the formed model for heat treatment; the heat treatment temperature is 800-1000 ° C, and the heat treatment time is 0.5-1 hour; a one-time hot-rolled product is obtained.

Embodiment 3

[0023] Weigh the raw materials for preparing the product, iron powder: 90%-95%, zinc powder: 2%-3%, nickel powder: 1%-2%, chromium powder: 1%-2%, mix the raw materials; put the raw materials into In the mold, after the model is formed, spray paraffin wax; put the prepared mold into the sintering furnace for sintering; the sintering temperature is controlled at 1200-1300 °C, and the sintering time is 1 hour; the residual temperature of the sintered model is used for heat reduction. Diameter and hot-rolled external thread; use the formed model for heat treatment; the heat treatment temperature is 800-1000 ° C, and the heat treatment time is 0.5-1 hour; a one-time hot-rolled product is obtained.

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PUM

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Abstract

One-time hot rolling forming technology comprises the following steps: weighting raw materials for product preparation according to the following ratio, 90-95% of iron powder, 2-3% of zinc powder, 1-2% of nickel powder, 1-2% of chromium powder, and mixing the raw materials; placing the raw materials in a die, and spraying paraffin after formation is done; placing a prepared die in a sintering furnace for sintering; controlling the sintering temperature at 1200-1300 DEG C, and a sintering time is 1-2 hours; using model residual heat after sintering to carry out hot reducing and hot rolling of outer threads; using the formed model to carry out hot treatment; controlling the hot treatment temperature to be 800-1000 DEG C, and the hot treatment time is 0.5-1 hour, thus obtaining the one-time hot rolling forming product. The One-time hot rolling forming technology is simple in process, and product performance is excellent.

Description

technical field [0001] The invention relates to a material processing technology, in particular to a one-time hot rolling forming process. Background technique [0002] The pre-buried channel of the present invention is hot-rolled for one-time forming to ensure the performance and internal structure of the product. At present, most of them use hot-rolling and then bending forming technology. This technology destroys the internal molecular structure of the product and damages the channel. It is very large, and the product material is greatly damaged, and the specification of the product cannot be guaranteed in this way, and there are many defective products in the channel. Contents of the invention [0003] The technical problem solved by the present invention is to provide a one-time hot rolling forming process to solve the above-mentioned shortcomings in the background technology. [0004] The technical problem solved by the present invention adopts following technical s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F3/18B22F3/16B22F5/06
Inventor 不公告发明人
Owner SHANDONG TIANDUN MINING EQUIP