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20Cr13 upsetting heating device and upsetting heating process

A 20cr13, 1.20cr13 technology, applied in the field of 20Cr13 upsetting heating device and upsetting heating process, can solve the problems of inability to quickly adjust, hidden dangers of ingot safety, low forging temperature, etc., to reduce hidden dangers, improve the scope of application, avoid The effect of security risks

Pending Publication Date: 2021-07-13
HANGZHOU STEAM TURBINE CASTING & FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Because 20Cr13 stainless steel is highly sensitive to heat, the heating temperature is required. The general forging temperature is 1180-1200°C. Compared with the general alloy steel forging temperature of 1250-1270°C, the forging temperature of 20Cr13 stainless steel is relatively low. During the heat treatment process, the center of 20Cr13 is not easy to be compacted after upsetting, resulting in the quality reduction of 20Cr13 after upsetting and forging, which cannot meet the qualified use standard, and the distance between the current upsetting equipment and the heat treatment furnace is far, and there are artificially transported heated steel ingots. Potential safety hazard, and the adjustment degree of upsetting equipment is low, and it cannot be adjusted quickly according to the condition of the steel ingot

Method used

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  • 20Cr13 upsetting heating device and upsetting heating process
  • 20Cr13 upsetting heating device and upsetting heating process
  • 20Cr13 upsetting heating device and upsetting heating process

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Example 1, please refer to Figure 1-9 , this embodiment provides a technical solution: 20Cr13 upsetting heating device, including:

[0050] A heat treatment furnace 1, the side opening of which is equipped with a furnace door unit 3;

[0051] The heat transfer unit 4 is installed on one side of the heat treatment furnace 1 and is arranged corresponding to the opening on the side of the heat treatment furnace 1;

[0052] Upsetting seat 2, which is installed on the end of the heat transfer unit 4 away from the heat treatment furnace 1, and the interior of the upsetting seat 2 is equipped with a heat preservation unit 9;

[0053] The upsetting limit installation unit 5 is installed on the upsetting seat 2, the upsetting limit installation unit 5 is connected to the height adjustment unit 8 through the upsetting power unit 6, and the upsetting limit installation unit 5 is also connected through the disassembly unit 7 Upsetting round block 11 is installed;

[0054] The u...

Embodiment 2

[0079] Example 2, please refer to figure 1 , this embodiment provides a technical solution: 20Cr13 upsetting heating device. Hole block 34, two-way lead screw 35, heat shield 36, switch door 37, slide hole block 38 and slide bar 39, the side opening both sides of heat treatment furnace 1 are respectively provided with side bar 31, between the top of two side bars 31 There is a two-way lead screw 35 that is rotationally connected, and the two ends of the two-way lead screw 35 have opposite thread directions, and a slide bar 39 is fixedly connected between the bottoms of the two side bars 31, and two switch doors 37 are provided with two switch doors 37. The top of each is provided with screw hole block 34, and two screw hole blocks 34 are threadedly connected with the two ends of two-way lead screw 35, and the bottom of two switch doors 37 is respectively provided with slide hole block 38, and two slide hole blocks 38 are connected with slide hole block. The rod 39 is slidingl...

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Abstract

The invention discloses a 20Cr13 upsetting heating device and an upsetting heating process. The upsetting heating process comprises the following steps: conducting preheating: putting a 20Cr13 round ingot into a heat treatment furnace for heating until the overall temperature of the 20Cr13 round ingot is raised to 1200 DEG C; conducting primary heat preservation: keeping the temperature of the 20Cr13 round ingot at about 1200 DEG C through a heat treatment furnace for 7 hours; conducting secondary heating and heat preservation: raising the temperature of the 20Cr13 round ingot to 1210-1220 DEG C through the heat treatment furnace, and keeping the temperature for 2 hours; opening a furnace door unit on the side face of the heat treatment furnace, clamping the 20Cr13 round ingot to a heat transfer unit, and conveying the 20Cr13 round ingot to an upsetting seat through the heat transfer unit; framing the 20Cr13 round ingot through an upsetting limiting ring, and conducting upsetting treatment on the 20Cr13 round ingot; and in the upsetting treatment process, conducting heat preservation treatment on the 20Cr13 round ingot through a heat preservation unit, and keeping the upsetting temperature at 1200 DEG C. In the upsetting procedure, the center of 20Cr13 stainless steel can be compacted, the compacting effect is improved, it is guaranteed that the quality of 20Cr13 obtained after upsetting forging is stable, and the qualified use standard can be met.

Description

technical field [0001] The invention relates to the technical field of 20Cr13 upsetting, in particular to a 20Cr13 upsetting heating device and an upsetting heating process. Background technique [0002] Because 20Cr13 stainless steel is highly sensitive to heat, the heating temperature is required. The general forging temperature is 1180-1200°C. Compared with the general alloy steel forging temperature of 1250-1270°C, the forging temperature of 20Cr13 stainless steel is relatively low. During the heat treatment process, the center of 20Cr13 is not easy to compact after upsetting, resulting in the quality reduction of 20Cr13 after upsetting and forging, which cannot meet the qualified use standard, and the distance between the current upsetting equipment and the heat treatment furnace is far, and the steel ingots heated by manual transportation exist. Potential safety hazard, and the upsetting equipment can be adjusted to a low degree, and cannot be adjusted quickly accordin...

Claims

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Application Information

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IPC IPC(8): B21J1/06B21J5/08B21J7/02B21J13/00B21J7/20C21D9/70
CPCB21J1/06B21J5/08B21J7/02B21J13/00B21J7/20C21D9/70
Inventor 叶常晖童自谦周黎明
Owner HANGZHOU STEAM TURBINE CASTING & FORGING
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