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Method for determining tempering temperature

A technology of tempering temperature and tempering hardness, applied in the field of computer-aided heat treatment process design, can solve the problems of poor consistency and standardization, complexity and low efficiency of tempering process, low efficiency of process selection, etc. Improve process design efficiency and select reasonable effects

Active Publication Date: 2012-07-18
NANJING DEV ADVANCED MFG
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  • Claims
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Problems solved by technology

[0008] The emergence of the above situation leads to the complexity and inefficiency of the traditional manual tempering process, and the consistency and standardization of the process prepared by the process is poor, and the efficiency of process selection is usually relatively low

Method used

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  • Method for determining tempering temperature
  • Method for determining tempering temperature

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Embodiment 1

[0031] Such as figure 1 and figure 2 As shown, this embodiment includes the following steps:

[0032] (1) The parts material of the present embodiment is 40Cr, read the tempering hardness-tempering temperature relational table in the database, as shown in table 1, the tempering hardness-tempering temperature relational table in the database is selected from Wang Xiankui, "Material and Its Heat Treatment", Machining Handbook (Single Book) ISBN 978-7-111-24249-9: Page 265, 2008.6.1.

[0033] (2) Determine the tempering temperature according to the tempering hardness requirement input by the user as HRC42-52, including:

[0034] 1) Standardized tempering hardness requirements: the tempering hardness input by the user is required to span 3 intervals or more intervals;

[0035] Take the original tempering hardness range, that is, the intermediate value HRC47 of the tempering hardness requirement input by the user, as the normalized tempering hardness;

[0036] 2) Compare the t...

Embodiment 2

[0050](1) the parts material of the present embodiment is Cr12, read the tempering hardness-tempering temperature relational table in the database, as shown in table 1, the tempering hardness-tempering temperature relational table in the database is selected from Wang Xiankui, "Material and Its Heat Treatment", Machining Handbook (Single Book) ISBN 978-7-111-24249-9: Page 265, 2008.6.1.

[0051] (2) Determine the tempering temperature according to the tempering hardness requirement input by the user as HRC47-53, including:

[0052] 1) Standardized tempering hardness requirements: take the original tempering hardness range, that is, the intermediate value HRC50 of the tempering hardness requirements input by the user, as the standardized tempering hardness;

[0053] 2) Compare the tempering hardness after normalization with the tempering hardness upper limit and tempering hardness lower limit in the tempering hardness-tempering temperature relationship table in order to determi...

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Abstract

The invention discloses a method for determining tempering temperature, which comprises the following steps: reading a relation table of tempering hardness-tempering temperature in a database according to a material of a part; and determining the tempering temperature according to the tempering hardness. The tempering temperature can be determined according to the material and the tempering hardness requirement inputted by users, so that the process design efficiency is enhanced and the design error can be avoided, the selection of tempering temperature is more reasonable without the phenomenon of columns crossing, the obtained technological parameter has good consistency, scientific and standard design result.

Description

technical field [0001] The invention relates to a computer-aided heat treatment process design method, in particular to a method for determining tempering temperature. Background technique [0002] The metal tempering process is often a heat treatment process in which the hardened workpiece is heated to a temperature below the phase transition temperature, kept for a certain period of time, and then cooled to room temperature to obtain specific mechanical properties. [0003] The key to the preparation of the tempering process is to determine the tempering temperature and the tempering holding time. Usually, when preparing the tempering process of steel, the tempering process of the parts is determined according to the final hardness requirements of the parts and the effective thickness of the parts. Fire temperature and tempering holding time. The relationship between tempering hardness and tempering temperature is more complicated. It is closely related to the composition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/18C21D11/00
Inventor 张利王洁周伯荣史翔杨清林
Owner NANJING DEV ADVANCED MFG
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