Laser processing opens up new channels for high-strength steel applications

The advantage of using high-strength steel to manufacture the car shell is obvious. Its tensile strength is several times that of other ordinary steels, so that the thickness of the sheet can be reduced without affecting the structural strength of the car body; another advantage is Compared with the previous ordinary steel that requires multiple accessories to be assembled as reinforcing ribs, now there is only one shell without the need to install accessories, which can reduce the number of accessories, simplify the assembly process, and reduce production costs. Nowadays, a large number of automobile manufacturers and their accessory suppliers have developed a keen interest in the application of high-strength steel to car body structures. At present, the Porsche Cayenne and Volkswagen Touarge SUV are using high-strength steel as their car bodies; Volkswagen Passat and Volkswagen Eos hard-top convertibles that use high-strength steel for most of the car bodies.

This kind of high-strength steel and super-strength steel is used in automobile manufacturing, thanks to two modern advanced technologies: stamping hardening and laser processing.

Breakthrough in stamping hardening

This kind of processing technology has only revolutionized automobile manufacturing in recent years. Volkswagen is the main pioneer of this process. It is one of the first companies to apply high-strength steel to the automobile manufacturing industry. The first automobile company to manufacture hot-stamped high-strength steel by itself. The Passat presented in the fall of 2004 marked the beginning of the extensive use of hot stamped parts in every car. Most of the passenger compartments, B-pillars, central flue, roof and side panels of these cars use high-strength steel as structural parts.

Laser processing

However, hot stamping is only the first step to solve the problem. The hardness of high-strength steel is generally higher than that of cutting tools, which causes great wear on the tools. Laser processing can solve this problem. No matter how hard the material is cut, laser cutting will not wear out at all. Especially for steel plates with a strength of up to 1500MPa, there is almost no other economically feasible processing method that can replace laser cutting. In this case, the service life of mechanical punching machines and cutting equipment will be greatly shortened, and laser cutting has the advantages of short installation time, flexible product replacement and sample production, in addition to completely free of these wear problems. Especially for curves with narrow corners or small curvatures, mechanical cutting is incomparable.

Laser can be used for cutting high-strength steel and welding. Laser welding is highly efficient and economical, and the welding quality has been greatly improved. Similar to laser cutting, one of the advantages of laser welding is that the heat input is very small. Because for high-strength steel, if the heat input is too large, it may lose its high-strength characteristics. Laser welding is also a high-quality processing process, with only small thermal deformation, almost no warpage of the material, and its accuracy is also very good. In addition, the laser can also be used to weld some special parts, such as the connection between the tailgate and the roof of a car. Moreover, laser welding requires smaller flanges than traditional spot welding, which also reduces body weight and fuel consumption.

The requirements of automobile manufacturers have always been stringent. For precision parts, the tolerance requirements should not exceed 3mm. If you need to weld and cut parts, or consider that the size of each part of the entire car body must meet a critical tolerance, then the machining error of each part must be reduced to ±0.4mm. Laser processing can fully meet the demanding requirements of users. The key point is to master the matching relationship between laser power, cutting speed, material characteristics and thickness in various applications, otherwise roughness, burrs or sintering points are prone to appear, and even the phenomenon that steel cannot be cut at all will appear.

Technology competition

As an authoritative provider of industrial laser solutions, Hongte Laser Farrell is committed to promoting the development of the automotive industry and providing a full range of high-quality laser processing application solutions for automotive manufacturing.

1. Laser welding

Hongte Laser's brand FARLEY•LASERLAB inherits the advanced technology and brand pedigree from Australia. After years of technological innovation and technological breakthroughs, it has reached the domestic leading and international first-class level. FARLEY•LASERLAB laser welding equipment has fast welding speed, high processing efficiency, narrow weld heat affected area, good weld quality, and high degree of flexibility. It is the first choice for laser welding of automotive vehicles and parts.

Falilai Auto Body-in-White Laser Automatic Welding Equipment

People familiar with the automotive industry know that automotive body-in-white welding is the main line of the automotive manufacturing industry, and the industry has a very high barrier to entry. Prior to this, the field of body-in-white welding was monopolized by foreign companies, and no domestic company was involved. The field. With its first-class technical strength, Falile successfully entered this field, breaking industry barriers and filling the domestic gap.

2, laser cutting

Laser cutting is one of the most commonly used laser processing methods. The types of laser cutting are divided into four types: laser vaporization cutting, laser melting cutting, laser oxygen cutting, and laser scribing and controlled fracture. The standards for measuring the quality of the cutting process include cutting speed, cutting accuracy, stability and reliability.

Falilei is committed to providing a wide range of laser cutting application solutions for the automotive industry. A series of laser cutting equipment developed and produced by the company can bring perfect plane cutting and three-dimensional cutting effects to auto parts.

Laser technology opens a new channel for processing high-strength steel and improves economic efficiency. It is believed that laser technology will have a greater impact on the automotive industry in the future.

YINGDE VENTECH INTELLIGENT EQUIPMENT CO., LTD. is experienced in producing powder coating machine for sale INFO CENTER products featuring topnotch quality with ODM services available. Welcome to visit our site at Ventech Automatic Machine.

Check out offers at Ventech Automatic Machine and read exclusive reviews on latest powder coating system for sale INFO CENTER on our website.we are looking forward to creating mutual benefits with you.

INFO CENTER are less complex compared with assembly machine manufacturers.

Time is one of the biggest challenges cited by manufacturing INFO CENTER.

INFO CENTER is one of the best products sold in the market today.