Elimination of cracks on the cutting edge

[aminaas1576]

Wear-resistant steel is widely used in mining machinery, coal mining and transportation, construction machinery, agricultural machinery, building materials, power engineering, railway transportation and other sectors. For example, steel balls and lining plates for ball mills, bucket teeth and buckets for excavators, roller walls, toothed plates and hammers for various crushers, track plates for tractors and tanks, impact plates for fan mills, railway switches, middle chute plates, chute ribs and round chains for coal scraper conveyors, shovels and teeth for bulldozers, lining plates for large electric dump trucks, drill bits for oil wells and iron ore open pits and so on.

Processing method
(1) The cutting method of steel plate is suitable for both cold cutting and hot cutting. Cold cutting includes water jet cutting, shear cutting, sawing or abrasive cutting; Hot cutting includes oxy-fuel cutting (hereinafter referred to as "flame cutting"), equal particle cutting and laser cutting.

(2) Cutting method: through relevant technological experiments, master the general characteristics and cutting thickness range of various cutting methods of steel plates.

(3) The flame cutting method for high-quality wear-resistant steel is as simple as cutting ordinary low-carbon and low-alloy steel. When cutting thick wear-resistant steel plates, pay attention!!! As the thickness and hardness of the steel plate increases, the likelihood of cracks on the cutting edge increases.


The best method to eliminate edge cracks is to australia number data preheat before cutting. Preheating is usually required before flame cutting.

Preheating can be done using oxygen-gas burners, electronic heating pads or heating furnaces. The required temperature should be measured on the back of the heating pad.

The entire area of ​​the steel plate must be uniformly heated to prevent local overheating in the area of ​​contact with the heat source.

The preheating temperature depends on the grade and thickness of the steel plate.

Conclusion
With the rapid development of the manufacturing industry, the demand for advanced wear-resistant steel is gradually increasing. The research and production of high-value advanced wear-resistant steel is of great significance to the development of the entire industry. Feedback from our users - the use of Liangang NM series hardened and tempered wear-resistant steel plates to process the wear-resistant lining plates of dock unloaders has greatly increased the service life of the wear-resistant lining plates, reduced the replacement frequency of the wear-resistant lining plates, and greatly improved the work efficiency.