Resistance heating system for ultra-high strength steel

Abstract

The invention provides a resistance heating system of ultrahigh-strength steel. The resistance heating system comprises a resistance welding power supply system and a roller assembly line or a drum assembly line, wherein the roller assembly line or the drum assembly line and the resistance welding power supply system are in connection control; and the roller assembly line or the drum assembly line comprises a lower bracket, a lifting frame, an upper-layer roller train, a lower-layer roller train, upper rollers and lower rollers. The roller assembly line or the drum assembly line is arranged to be connected with the resistance welding power supply system, so that replacement of the workload of a 40m ceramic hot rod heating furnace with the 1.5M-3M roller assembly line or the drum assembly line is achieved, the occupied space is small and the investment cost is low. The resistance welding power supply system can carry out power supply connection in different manners according to the production requirements, and can provide different voltage, current, power-on time and pulse quantities; different heating temperatures are provided for different intervals of the roller assembly line or the drum assembly line; a steel plate obtains different metallographic structures to reach the expected intensity; the effect is good; and the efficiency is high.

Description

technical field [0001] The invention relates to a resistance heating system for ultra-high-strength steel. Background technique [0002] In recent years, requirements for crashworthiness and fuel consumption of automobiles have increased in the automobile industry. At present, the application of high-strength and ultra-high-strength steel plates for vehicles in the automotive industry has attracted more and more attention due to their light weight and high strength, and has become an important tool to meet the requirements of vehicle weight reduction and increase crash performance and safety performance. way. In the next 5 to 10 years, the development and application of Deep Working Technology (DWT) for Advanced High Strength Steels (AHSS) automotive panels and lightweight body components will become a major issue and an urgent task for the steel industry. However, steel plate suppliers have not been able to provide new steel plates with both high strength and excellent fo...

AI Technical Summary

Problems solved by technology

All these influencing factors lead to the length of a furnace installation exceeding 40m

Due to the low energy utilization rate and poor heating quality, as well as the large footprint and high investment cost, its production cost is high, which is not conducive to large-scale application; while in China, there are high-frequency induction heating methods on the market to heat ultra-high-strength steel, but the heating effect is not good, and the steel plate is easily deformed

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