Multipoint broken line furnace temperature correction method for vacuum degreasing sintering furnace
A vacuum degreasing and sintering furnace technology, applied in temperature control, non-electric variable control, instruments, etc., can solve problems such as large temperature deviation and inability to accurately control other temperature points, and achieve accurate temperature characteristics and improve product performance.
Active Publication Date: 2015-03-25
NINGBO HIPER VACUUM TECH CO LTD
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Problems solved by technology
But in fact, the temperature deviation value of the vacuum degreasing sintering furnace in each process temperature section changes in real time. Although the temperature control at this temperature point is very accurate, other temperature points still cannot be accurately controlled, and even make the temperature deviation larger.
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Embodiment 1
[0022] When the vacuum degreasing sintering furnace in this embodiment is corrected for multi-point broken line furnace temperature, it includes the following steps:
[0023] (1) Collect the set output temperature Y and the temperature X inside the box corresponding to the set output temperature Y.
[0024] When the output temperature Y1=25℃, the temperature inside the box is X1=25℃; when the output temperature Y2=610℃, the temperature inside the box is X2=600℃; when the output temperature Y3=1355℃, the temperature inside the box is X3 =1350°C; when the set output temperature Y4=1500°C, the temperature inside the box X4=1500°C;
[0025] (2) According to the collected set output temperature Y and the corresponding box temperature X, obtain the mapping from the box temperature X to the set output temperature Y: f(x). Among them, f(x) is a piecewise function, and its expression is
[0026] f ( x ) = ...
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The invention relates to the technical field of sintering furnaces, in particular to a multipoint broken line furnace temperature correction method for a vacuum degreasing sintering furnace. The method includes the following steps that (1) set output temperatures (Y) and temperatures (X) inside a box corresponding to the set output temperatures (Y) are collected; (2) mapping f (x) from the temperature (X) inside the box to the set temperature (Y) is obtained according to the collected set output temperature (Y) and the corresponding temperature (X) inside the box; a set output temperature (Ty) required by a process is obtained according to a temperature (Tx) inside the box required by the process and according to the mapping f (x) in the step (2). By means of the multipoint broken line furnace temperature correction method, the temperatures in the box of the vacuum degreasing sintering furnace can be corrected, the internal temperatures of the material box is made to be closer to actual temperature, and a certain actual function is achieved for process temperature researches.
Description
technical field [0001] The invention relates to the technical field of sintering furnaces, in particular to a multi-point broken line furnace temperature correction method for a vacuum degreasing sintering furnace. Background technique [0002] Vacuum degreasing and sintering furnace is a vacuum furnace integrating degreasing and sintering. It is mainly used in metal powder injection molding and other industries. Under the action of high temperature below the melting point, the powdery material after pressing and forming will gradually become a certain geometric shape and strength through the mutual bonding and material transfer between the green bodies, so that the pores are eliminated, the volume shrinks, and the strength is improved. The purpose is to transform the powdery material into a dense body and endow the material with unique properties. as in the accompanying drawings figure 1 As shown, it is an existing vacuum degreasing sintering furnace, which mainly include...
Claims
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Inventor 刘鹏徐文立陈可杰
Owner NINGBO HIPER VACUUM TECH CO LTD