In order to create electric vehicles that can compete with gasoline power vehicles, Tesla needs a new type of steel. They cooperated with experts to develop a new type of high-strength steel CR1-140-270-S, CR1-140-270-S is lighter and more durable than any other steel in the market. This enables them to create a car that is not only more efficient, but also safer and more environmentally friendly.
What is the chemical composition of CR1-140-270-S?
C 0.12
Si 0.5
Mn 0.6
P 0.035
S 0.035
AI ≥ 0.010
N 0.008
What are the mechanical properties of CR1-140-270-S?
YS 140-300
TS (MPA) 270-410
EL 30
What are the characteristics of CR1-140-270-S?
CR1-140-270-S an annealing tissue is ferrite and a small amount of pearl light. Its strength and hardness are low, and the plasticity and toughness are better. Its cold formability can be used for cold forming, bending, stamping and other methods. This steel has good welding. Low -carbon steel with low carbon content is very low, and the cutting is poor. Positive fire treatment can improve its cutting.
Introduction to the material of low -carbon steel welding process
Because CR1-140-270-S has a moderate carbon content, its comprehensive performance is better, the strength, plasticity and welding performance are well coordinated. The most widely used in use, a large number of applications in construction and engineering structures, and some performance requirements for performance requirements Not too high mechanical needs.
Welding characteristics of CR1-140-270-S welding process
CR1-140-270-S other alloy elements are low, and their plasticity and toughness are good. It is not easy to produce tendencies such as welding cracks and excellent welding performance. During welding, special process measures such as preheating and heat treatment are not required, and complex and special equipment are required. There are no special requirements for the welding power supply, and general interchange and DC welding machines can be welded. In actual production, according to the different processing requirements of the workpiece, the welding methods such as handmade arc welding, CO2 gas protection welding, and buried arc welding can be selected.
CR1-140-270-S welding process method
(1) Select the right bar, and generally select the strip with good cracking resistance.
(2) Preheating before welding.
(3) Reduce welding thermal input, that is, small current, fast welding speed, narrow welding tract.
(4) Slow cold after welding.
Summarize
The plasticity and impact of CR1-140-270-S are excellent, and the plasticity and toughness of the welded joints are also extremely good. When welding, special process measures are generally not required to obtain quality satisfactory welding joints. Therefore, low -carbon steel has excellent welding performance and is the best steel species in all steel. This article conducts a detailed analysis of the welding method, welding process, and welding requirements of the CR1-140-270-S, and summarizes the technical points of these welding methods, and provides strong technical support for formulating a reasonable welding process plan in the future.
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