Quenching device and quenching method

a technology of a quenching device and a quenching method, which is applied in the direction of heat treatment equipment, manufacturing tools, furnaces, etc., can solve the problem that leakage problems are necessarily presen

Inactive Publication Date: 2012-03-22
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0006]The exemplary embodiments and/or exemplary methods of the present invention are based on an object of providing a quenching device in which leakage problems are avoided and in which a starting of the powerful drive motor for the blower is possible even before the flooding of the chamber with quenching gas

Problems solved by technology

Because in the prior art the motor shaft of the drive motor passes through the wa

Method used

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  • Quenching device and quenching method
  • Quenching device and quenching method

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Embodiment Construction

[0021]FIG. 1 shows a possible specific embodiment of a quenching device 1. In the depicted exemplary embodiment, quenching device 1 has a single chamber 2 that can be flooded with quenching gas. A floodable chamber in the form of a flow channel as shown in EP 1154 024 B1 does not exist here, but can be provided if needed.

[0022]Chamber 2 has a loading door 3 that can be sealed in pressure-tight fashion, through which chamber 2 (here the quenching chamber) can be loaded with material 4 that is to be quenched. For this purpose, material 4 that is to be quenched, which in the depicted exemplary embodiment is made up of steel workpieces, is placed on a charging rack 5 that, using suitable transport devices, can be transported into chamber 2 under a vacuum atmosphere and then transported out of said chamber after the quenching process.

[0023]An oven (not shown) for the preliminary heat treatment of quenching material 4 is standardly situated in front of loading door 3.

[0024]A quenching gas...

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Abstract

A quenching device is described that includes at least one chamber that can be filled with quenching gas and that has a blower wheel for circulating quenching gas, in particular a quenching chamber and/or a flow channel, a drive motor, situated outside the chamber, for driving the blower being allocated to the blower wheel. The drive motor is coupled to the blower wheel so as to transmit torque via a coupling that operates in contactless fashion. Also described is a related quenching method.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a quenching device for quenching material that is to be quenched, in particular metallic workpieces, using quenching gas, as well as a quenching method for quenching material that is to be quenched, in particular metallic workpieces, using quenching gas.BACKGROUND INFORMATION[0002]In order to produce defined material properties, such as a high degree of hardness or sufficient resistance to wear, workpieces, usually made of metal, are subjected to thermal treatment. The most important factor in determining the result of this treatment is the speed with which the workpieces are cooled after having been heated. It is known to use water, oil, or quenching gas for the quenching process necessary for this purpose. The main advantage of using quenching gases instead of quenching liquids is that the material being quenched does not have to be cleaned after quenching, and that a higher degree of quenching homogeneity can be achieve...

Claims

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Application Information

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IPC IPC(8): C21D1/62C21D1/18
CPCC21D1/767C21D1/613
Inventor MUELLER, BERNHARDLOERCHER, MICHAEL
Owner ROBERT BOSCH GMBH
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