Laser Cleaning Machines: Standing Out with Clear Advantages over Traditional Cleaning MachinesIn the field of industrial cleaning, the choice of cleaning technology has a crucial impact on production efficiency and product quality. Traditional cleaning machines have long occupied an important positi
The Versatile Applications and Outstanding Features of Laser Marking MachinesIn the modern manufacturing and industrial landscape, laser marking machines have emerged as indispensable tools, revolutionizing the way products are marked and identified. Their widespread use across various industries ca
The Multifaceted Uses of Laser Cutting MachinesIn today's rapidly evolving industrial landscape, laser cutting machines have emerged as a revolutionary tool, offering a wide range of benefits that make them indispensable across various sectors. From their environmental friendliness to their versatil
In the modern manufacturing industry, laser welding machines have emerged as a game - changing technology, offering a plethora of benefits over traditional welding methods. This blog post will explore the remarkable features of laser welding machines, with a focus on their simple operation, high eff
The Advantages of Fiber Laser Cutting Machines: Low Maintenance, Depreciation, and Material LossIn the modern manufacturing industry, fiber laser cutting machines have emerged as a game - changer. Their remarkable features not only improve production efficiency but also significantly reduce costs in
The High - Safety and User - Friendly Laser CutterIn the world of modern manufacturing and DIY projects, the laser cutter has emerged as a revolutionary tool. It offers precision and efficiency that traditional cutting methods can hardly match. But one of the most remarkable features of a laser cutt
The Welding Machine: Easy to Use and Widely ApplicableIn the world of metalworking and DIY projects, the welding machine is a powerful and versatile tool. Whether you are a professional welder or a hobbyist, understanding the simplicity of operation and wide range of applications of a welding machin
The Versatile Cutting Machine: Simple Usage and Wide ApplicationsIn the world of DIY projects, home renovations, and industrial manufacturing, the cutting machine is an indispensable tool. Its simplicity of use and wide range of applications make it a favorite among professionals and hobbyists alike
The Advantages and Features of Laser Cutting MachinesIn the modern manufacturing industry, laser cutting machines have emerged as a revolutionary tool, transforming the way materials are processed. But what exactly are laser cutting machines, and why are they so popular? Let's take a closer look.Wha
Understanding Laser Cleaning Machines: Technology and ApplicationsIn recent years, laser cleaning machines have been gaining popularity across various industries. From removing rust and paint in the automotive and aerospace sectors to cleaning historical artifacts in the cultural heritage field, the
In today's era of rapid technological development, various innovative devices are emerging continuously, bringing great convenience to our lives and production. The laser cleaning machine, as a new type of cleaning equipment, is gradually standing out in various fields. With its unique advantages, i
The Advantages and Features of Laser Engraving MachinesIn the modern manufacturing and creative industries, laser engraving machines have emerged as a revolutionary tool, offering a wide range of applications and remarkable advantages over traditional engraving methods. This blog post will delve int
Welding technology has significantly advanced, offering a range of techniques tailored to different manufacturing needs. Among these, laser welding and MIG welding stand out for their unique capabilities. This article explores each method's core principles, their distinct advantages, and their appli
When it comes to removing paint from wood surfaces, traditional methods like sanding, chemical stripping, or heat guns have long been the go-to options. Yet, these techniques can be labor-intensive, messy, and even harmful to the wood. Using a laser wood paint remover is a precise, efficient and env
Heavy rust accumulation is a common problem that affects a wide range of materials, particularly metals. Rust can quickly degrade the integrity and appearance of items. Selecting the right rust removal method is crucial to preserving the material's quality and ensuring its longevity. Laser rust remo
Laser cleaning has emerged as a cutting-edge solution for various industrial cleaning and surface preparation tasks. Known for its precision and efficiency, it is increasingly being adopted across industries. Yet, one of the key considerations for businesses is understanding the laser cleaning cost
Welding is an essential process in many industries, but it comes with significant risks. Understanding welding dangers is crucial for anyone involved in the process. These dangers can affect human health, the environment, and the materials being welded. This article will explore the risks associated
In the evolving world of welding technology, the portable hand held welder has emerged as a game-changer. Handheld laser welding machines stand out, providing the perfect blend of portability, efficiency, and precision. This article will explore why these portable handheld welders are indispensable.
Welding galvanized steel presents unique challenges due to its zinc coating. This coating is essential to prevent rust and corrosion. While this coating offers advantages durability, it also complicates welding. Understanding the nuances of weld galvanised steel is crucial for achieving strong, reli
Laser cutting has revolutionized modern manufacturing by offering precision, efficiency, and versatility. Whether you're in the automotive industry, creative arts, or industrial fabrication, understanding laser cutter basics is essential. This guide provides a comprehensive introduction to laser cut
Views: 1069 Author: heyu Publish Time: 02-29-2020 Origin: Site
In laser welding, the welding material is an important factor that affects the welding effect. Therefore, the analysis of welding characteristics of welding materials is particularly important. Common welding materials are: galvanized plate, stainless steel (austenitic stainless steel, ferritic stainless steel, martensitic stainless steel), alloy steel, aluminum alloy, titanium and titanium alloy, copper. Here is a brief introduction of these common welding materials and their welding characteristics.
1、 Laser welding material -- galvanized sheet
The vaporization temperature of zinc (903 ℃) is much lower than the melting point of steel (1535 ℃). During the welding process, the vaporization of zinc causes serious porosity and undercut. When the thickness of the galvanized layer in the overlap area is less than 5-10 μ m, laser welding can be used. Only when the thickness of the zinc coating reaches 10-20 μ M can the corrosion resistance be guaranteed.
2、 Austenitic stainless steel as laser welding material
Generally, austenitic stainless steel has better welding performance. The thermal conductivity of austenitic stainless steel is only 1 / 3 of that of carbon steel, the absorption rate is slightly higher than that of carbon steel, and the welding penetration is about 5-10% of that of ordinary carbon steel. Laser welding is very suitable for welding Cr Ni series stainless steel because of its small heat input and high welding speed. The thermal deformation and residual stress of laser welding austenitic stainless steel are relatively small. When other conventional welding methods are used, the thermal expansion of austenitic stainless steel is 50% larger than that of carbon steel.
3、 Ferritic stainless steel as laser welding material
Toughness and ductility are higher than other welding methods. In the process of fusion welding, martensite transformation and grain coarsening reduce the joint strength and corrosion resistance, but relatively speaking, the influence of laser welding is lower than that of conventional welding. Compared with austenitic stainless steel and martensitic stainless steel, laser welding of ferritic stainless steel has the least tendency to produce hot and cold cracks.
4、 Martensitic stainless steel as laser welding material
In stainless steel, the weldability of martensitic stainless steel is the worst, the welded joint is usually hard and brittle, and has the tendency of cold cracking. When welding stainless steel with carbon content more than 0.1%, preheating and tempering can reduce the tendency of crack and embrittlement.
5、 Alloy steel of laser welding materials
In many applications, including aircraft engine and automobile transmission, laser is often used for welding, and many applications can be welded at room temperature. Due to the characteristics of alloy steel, it is easy to produce cold cracks. Therefore, the influence of low impurity and carbon content on welding quality is very important.
6、 Aluminum alloy as laser welding material
Laser welding of aluminum alloy requires relatively high energy density: high reflectivity of aluminum alloy; high thermal conductivity of aluminum alloy.
Series 1 to 5 aluminum can be laser welded, but there are some differences in process due to different alloy elements. Due to the volatile elements in aluminum alloy, such as silicon and magnesium, there are many pores in the weld. Liquid aluminum has low viscosity and low surface tension, so it is necessary to pay close attention to the weld pool when welding aluminum to prevent the overflow of liquid aluminum in the pool, which can be solved by joint design or non penetration method.
7、 Titanium and titanium alloy of laser welding materials
High quality and good plasticity welding joint can be obtained by laser welding. Titanium is very sensitive to the embrittlement caused by oxygen, hydrogen, nitrogen and carbon atoms. Pay special attention to joint cleaning and gas protection. Titanium starts to absorb hydrogen at 250 ℃, oxygen at 400 ℃ and nitrogen at 600 ℃. Hydrogen is the main reason for the delay crack in the heat affected zone of the joint. Reducing the source of hydrogen and vacuum annealing can reduce the hydrogen content of welded joints.
Porosity is a major problem in titanium and titanium alloy welding. The main ways to eliminate porosity are: a) welding with high purity argon, with purity higher than 99.9%; b) cleaning before welding; c) proper welding specification.
8、 Copper -- the material of laser welding
Copper is a highly reactive material. Copper is generally divided into brass and copper. If the content of zinc in brass exceeds the allowable range of laser welding, zinc is easy to vaporize, which may lead to defects such as porosity and faulty welding. The reflectivity of copper is very high, so it needs high energy density to weld. Impurities such as sulfur and carbon contained in copper will damage the weld. The absorption rate of laser beam is improved by surface treatment. leapion
The All - in - One Fiber Laser Welding Machine: Efficiency, Portability, and Versatility
How A Portable Hand Held Welder Can Transform Your Welding Projects
Chinese Laser Welders: Quality Meets Innovation on The Global Stage
Is Fiber Laser Welding Powerful? Which Is Better Than Argon Arc Welding?
What To Know Before Buying An Aluminum Laser Welding Machine?