Intelligent control equipment and method for heat treatment process of large castings

By using a multi-regional sensor array and intelligent control system, differentiated temperature change thresholds are dynamically generated, solving the problem of uneven temperature field during the annealing of large castings. This enables precise regional coordinated control, improves product quality consistency and production stability, and reduces energy consumption.

CN121575207BActive Publication Date: 2026-05-26HEBEI XINGSHENG MACHINERY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HEBEI XINGSHENG MACHINERY
Filing Date
2026-01-27
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing technologies cannot achieve precise and coordinated control of thermal parameters in multiple regions of the furnace during the annealing process of large castings, resulting in uneven temperature field distribution, uneven heating of castings, asynchronous carburizing/nitriding processes, workpiece deformation, hardness dispersion, and batch stability deterioration. Traditional overall control modes are unable to capture early weak abnormal signals in time, affecting product quality consistency.

Method used

Employing a multi-regional sensor array and intelligent control system, the system identifies temperature anomaly pattern clusters through clustering algorithms, calculates quality sensitivity and regional thermal coupling quantification indicators, dynamically generates differentiated temperature change thresholds, and monitors and executes regional collaborative control strategies in real time, including heating power adjustment, circulating airflow distribution, and cooling medium flow optimization.

Benefits of technology

It enables intelligent control from local temperature monitoring to global quality prediction, accurately identifies the causal links of heat transfer between regions, improves temperature field uniformity and process stability, ensures product quality consistency, and reduces energy consumption and shortens process cycle.

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Abstract

This invention relates to the field of heat treatment equipment technology, specifically to an intelligent control device and method for the heat treatment process of large castings. It utilizes thermocouple sensors and atmosphere concentration sensors installed in the annealing furnace to collect data. By analyzing historical annealing data of qualified and unqualified products, it identifies the heat transfer relationship between different thermocouple regions. Combining the cumulative effect of abnormal influences at different stages in different regions, it sets temperature change thresholds for each region. This solution not only achieves precise control of local temperatures but also improves the uniformity of the overall temperature field and process stability during the annealing of large castings by compensating for thermal interference between regions.
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