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Use method of quenching device

A technology of quenching device and quenching oil pool, applied in the field of heat treatment, can solve problems such as troublesome operation, and achieve the effect of saving energy and reducing labor intensity

Active Publication Date: 2018-05-08
宁波隆锐机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are the following problems in the process of use: 1. The parts must be preheated, and then heated in the furnace body after preheating. After heating, the discharge switch needs to be turned on regularly, and the operation is very troublesome.
2. It is necessary to artificially supplement the feed all the time

Method used

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Embodiment Construction

[0024] The present invention will be further described in detail below through specific implementations:

[0025] Instruction attached Figure 1 to 2 The reference signs in include: preheating furnace 10, flue gas valve 11, feed oblique section 12, flue gas channel 13, metal workpiece 20, vacuum heating furnace 30, one-way door 31, baffle plate 311, fixed column 40, Compression spring 41, wedge-shaped telescopic block 42, turning plate 50, receiving plate 51, quenching oil pool 60, wedge block 70, spring 71, support plate 72, brake plate 80, tension spring 81, drum 90, and card slot 91.

[0026] How to use the quenching device, such as figure 1 , figure 2 As shown, the quenching device includes a preheating furnace 10, a vacuum heating furnace 30, and a closed quenching oil pool 60 from top to bottom. The upper wall of the preheating furnace 10 is provided with a flue gas valve 11 that can only be opened upwards. An elastic member is connected between the air valve 11 and the pre...

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Abstract

The invention belongs to the technical field of heat treatment and particularly discloses a use method of the quenching device. The use method comprises the following steps that (1) the quenching device is inspected; (2) a metal workpiece is placed in a preheating furnace for preheating; (3) the preheated metal workpiece is placed on a roll-over stand, and an electric heating wire and a vacuum pump are started to suck out gas in a vacuum heating furnace; (4) the heated metal workpiece is manually transferred to an oil quenching bath after the metal workpiece is heated to the fixed temperature,and the preheated metal workpiece is supplemented to the roll-over stand; (5) after a new metal workpiece is supplemented into the vacuum heating furnace automatically, the vacuum pump is started tosuck gas out; and (6) after a period of time, a pressure valve is opened again, the metal workpiece on the roll-over stand is transferred to the oil quenching bath and the metal workpiece in the preheating furnace is transferred onto the roll-over stand, and circulating operation is carried out in this way. By using the used method, the metal workpiece can be supplemented automatically, and the metal workpiece is automatically sent into the oil quenching bath after the metal workpiece is heated, so that the machining efficiency is improved.

Description

Technical field [0001] The invention belongs to the technical field of heat treatment, and particularly relates to a method of using a quenching device. Background technique [0002] Before finishing the metal workpiece, the metal workpiece needs to be subjected to heat treatment such as quenching. Quenching is to first heat the product to a certain temperature, preheat for a period of time, and then heat it to above the critical temperature for a period of time to make the product fully or partially Stabilization, and then rapid cooling to below Ms (or isothermal near Ms) at a cooling rate greater than the critical cooling rate to perform a heat treatment process of martensite (or bainite) transformation. [0003] The heating furnaces commonly used in heat treatment are mostly push rod heating furnaces. The heating furnace relies on the reciprocating movement of the screw pusher at the tail of the furnace to push the metal workpiece from the inlet of the furnace tail to the furnac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/63C21D9/00C21D1/773
CPCC21D1/63C21D1/773C21D9/0062
Inventor 王健
Owner 宁波隆锐机械制造有限公司
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