CN-121592850-B - Cooling control system and method for salt bath quenching of bearing parts

CN121592850BCN 121592850 BCN121592850 BCN 121592850BCN-121592850-B

Abstract

A cooling control system and a cooling control method for salt bath quenching of bearing parts relate to the technical field of bearing heat treatment, wherein the cooling control system comprises a micro-model body which is arranged in a salt bath tank and comprises a sealing sleeve, a thermocouple temperature sensor and an electric heating element, wherein the thermocouple temperature sensor and the electric heating element are sealed in the sealing sleeve, the electric heating element is configured to be capable of actively heating the micro-model body to a preset target temperature and immediately stopping heating and naturally cooling the micro-model body, and the thermocouple temperature sensor is configured to collect temperature data of the micro-model body in a natural cooling process in real time. The cooling control system and the method can dynamically monitor the quenching intensity of salt bath quenching in real time, automatically generate a cooling characteristic curve through collected temperature data, construct a special control model by utilizing a self-learning algorithm, and finally automatically and accurately adjust the water supplementing amount according to the process requirements, so that the cooling rate of bearing parts is stabilized in an ideal range.

Inventors

YU HAIBO
MA YANHUA
YOU SHAOJUN
LIU JINGAO
LI FUWEI
GUO YONGQIANG
CHU XIAOXI

Assignees

洛阳轴承集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260127

Claims (10)

1. A cooling control system for salt bath quenching of bearing parts, comprising: the micro-simulation body is arranged in a salt bath and comprises a sealing sleeve, a thermocouple temperature sensor and an electric heating element, wherein the thermocouple temperature sensor and the electric heating element are sealed in the sealing sleeve, and the electric heating element is configured to be capable of actively heating the micro-simulation body to a preset target temperature and immediately stopping heating and naturally cooling the micro-simulation body; The data acquisition module is connected with the thermocouple temperature sensor and is used for receiving temperature data acquired in real time; the characteristic extraction module is connected with the data acquisition module and is used for acquiring temperature data and establishing a time-temperature curve, namely a cooling curve, of the micro-simulation body in the natural cooling process; The relation modeling module is connected with the characteristic extraction module and is used for establishing and updating a mapping relation model of the salt bath water content and the real-time quenching intensity based on the real-time quenching intensity collected by the history and the corresponding salt bath water content data; The logic control center is respectively connected with the characteristic extraction module and the relation modeling module, and is used for comparing the current real-time quenching intensity with a preset target intensity, generating a water supplementing control instruction according to the mapping relation model and the deviation between the real-time quenching intensity and the preset target intensity, and sending the water supplementing control instruction to an executing mechanism; The execution mechanism is connected with the logic control center and is used for receiving the water replenishing control instruction and accurately replenishing water to the salt bath according to the instruction.
2. A cooling control system for salt bath quenching of bearing parts as claimed in claim 1, wherein the sealing sleeve is of corrosion resistant stainless steel material.
3. The cooling control system for salt bath quenching of bearing parts according to claim 1, further comprising a data management module connected with the feature extraction module and the logic control center for storing the cooling curve, the quenching intensity and the water replenishment record and generating a traceable electronic report.
4. A cooling control system for salt bath quenching of bearing parts as set forth in claim 1 wherein said logic control hub is coupled to the electrical heating element for sending a start command to the electrical heating element prior to collecting temperature data to control said miniature simulators to heat to a predetermined target temperature prior to stopping heating immediately.
5. A cooling control system for salt bath quenching of a bearing component as set forth in claim 1 further comprising a weight compensation module coupled to said logic control hub for receiving heat exchange parameters associated with heat exchange of the bearing component and a water replenishment amount corresponding to the heat exchange parameters, establishing a linear compensation relationship of the heat exchange parameters and the water replenishment amount based on historically received data, dynamically compensating for a current water replenishment amount of the bearing component based on said linear compensation relationship, and modifying said water replenishment control command.
6. A cooling control system for salt bath quenching of bearing parts as in claim 1 further comprising an HMI touch screen coupled to the feature extraction module and logic control hub for parameter setting and status monitoring.
7. A cooling control method using the cooling control system according to any one of claims 1 to 6, characterized by comprising the steps of: Placing the miniature simulators in a salt bath; Stopping heating and naturally cooling the micro-simulation body, and collecting temperature data of the micro-simulation body in the natural cooling process in real time through a thermocouple temperature sensor; according to the temperature data, establishing a time-temperature curve or a cooling curve of the micro-simulation body in the natural cooling process; based on the historically collected real-time quenching intensity and the corresponding salt bath water content data, a mapping relation model of the salt bath water content and the real-time quenching intensity is established and updated; Comparing the current real-time quenching intensity with a preset target intensity, generating a water replenishing control instruction according to the mapping relation model and the deviation between the real-time quenching intensity and the preset target intensity, and replenishing water to the salt bath according to the water replenishing control instruction.
8. The method according to claim 7, wherein at least one of real-time water replenishment, fixed-cycle water replenishment, and workpiece quenching window-period water replenishment is used for the salt bath water replenishment.
9. The cooling control method according to claim 7, wherein the characteristic parameters in the cooling curve include at least one of an average cooling rate in a specific temperature interval, a total time required for the temperature to naturally cool from a preset target temperature to a cooling end temperature, and a derivative characteristic vector of the cooling curve.
10. The cooling control method according to claim 7, wherein the water replenishment control command is generated by a PID control algorithm or a fuzzy control algorithm.

Description

Cooling control system and method for salt bath quenching of bearing parts Technical Field The invention relates to the technical field of bearing heat treatment, in particular to a cooling control system and a cooling control method for salt bath quenching of bearing parts. Background Salt bath quenching is a key heat treatment process in bearing manufacture, and the cooling speed directly determines the metallographic structure transformation, hardness, toughness and final service life of bearing parts. At present, the technology has the common problems that firstly, an effective real-time monitoring means is lack of dynamic change of salt bath components (particularly water content), secondly, complex nonlinear relation between molten salt fluidity and heat transfer efficiency is difficult to quantitatively analyze, and finally, the regulation and control of quenching intensity mostly depends on the experience of operators to manually add water, so that the control precision is poor, the stability is low, and the consistency of product quality cannot be ensured. Disclosure of Invention The invention aims to provide a cooling control system and a method for salt bath quenching of bearing parts, which are used for dynamically monitoring the quenching intensity of salt bath quenching in real time, automatically generating a cooling characteristic curve through collected temperature data, constructing a special control model by utilizing a self-learning algorithm, and finally automatically and accurately adjusting the water supplementing amount according to the process requirements, so that the cooling rate of the bearing parts is stabilized in an ideal range. The technical scheme adopted by the invention is that the cooling control system for salt bath quenching of the bearing parts comprises: the micro-simulation body is arranged in a salt bath and comprises a sealing sleeve, a thermocouple temperature sensor and an electric heating element, wherein the thermocouple temperature sensor and the electric heating element are sealed in the sealing sleeve, and the electric heating element is configured to be capable of actively heating the micro-simulation body to a preset target temperature and immediately stopping heating and naturally cooling the micro-simulation body; The data acquisition module is connected with the thermocouple temperature sensor and is used for receiving temperature data acquired in real time; the characteristic extraction module is connected with the data acquisition module and is used for acquiring temperature data and establishing a time-temperature curve, namely a cooling curve, of the micro-simulation body in the natural cooling process; The relation modeling module is connected with the characteristic extraction module and is used for establishing and updating a mapping relation model of the salt bath water content and the real-time quenching intensity based on the real-time quenching intensity collected by the history and the corresponding salt bath water content data; The logic control center is respectively connected with the characteristic extraction module and the relation modeling module, and is used for comparing the current real-time quenching intensity with a preset target intensity, generating a water supplementing control instruction according to the mapping relation model and the deviation between the real-time quenching intensity and the preset target intensity, and sending the water supplementing control instruction to an executing mechanism; The execution mechanism is connected with the logic control center and is used for receiving the water replenishing control instruction and accurately replenishing water to the salt bath according to the instruction. Preferably, the sealing sleeve is made of corrosion-resistant stainless steel. The system also comprises a data management module which is connected with the feature extraction module and the logic control center and is used for storing the cooling curve, the quenching intensity and the water supplementing quantity record and generating a traceable electronic report. Preferably, the logic control center is connected with the electric heating element and is used for sending a starting instruction to the electric heating element before temperature data are acquired so as to control the miniature simulator to be heated to a preset target temperature and then immediately stop heating. The system comprises a logic control center, a weight compensation module, a linear compensation relation, a dynamic compensation module and a water compensation control instruction, wherein the logic control center is used for receiving heat exchange parameters related to heat exchange of bearing parts and water compensation quantity corresponding to the heat exchange parameters, the linear compensation relation between the heat exchange parameters and the water compensation quantity is established according to historically received data, t