Learn About Handheld Portable Laser Welding Machine Technology

IGOLDENCNC handheld portable laser welding machine, also called Handheld Fiber Laser Welder, Portable Fiber Laser Welding Machine, Manual Fiber Laser Welding Machine, is a new type high-power, high-end continuous welding tool that couples a high-energy laser beam into an optical fiber, collimates it into parallel light through a collimating lens after long-distance transmission, and then focuses on the workpiece for welding.

The handheld portable laser welding machine for metals, equipped either with an independently developed wobble welding head or a common welding head, greatly improving the joint strength and quality of welding and obtaining better weld formability. All products realize spot welding, straight seam welding, overlap welding, circumferential welding and welding of any track. And you can also add welding wire. Compared with traditional argon arc welding, the efficiency is increased by more than 50%.

how to solve the problem of deformation of the laser welding machine welding stainless steel plates? Leapion laser shares are as follows:

First, let's take a look at the welding difficulties of stainless steel sheet:

1. The welding process characteristics of the thin-walled stainless steel plate itself determine the difficulty of its welding. The most difficult problem of the thin-wall stainless steel welding machine is welding penetration and deformation.

2. The stainless steel sheet has a low degree of restraint, and is subjected to local heating and cooling during the welding process, resulting in uneven heating and cooling. The weldment will produce uneven stress and strain, and the longitudinal shortening of the weld will exert pressure on the edge of the sheet. When it exceeds a certain value, serious wave-like deformation will occur, which will affect the shape quality of the workpiece.

Reasons for laser welding deformation of stainless steel plate:

1. Welding current

As the welding current increases, the width of the weld will increase, and phenomena such as spatter will gradually appear, resulting in oxidation, deformation, and roughness on the weld surface.

2. Pulse width

When the pulse width increases, the strength of the welded joint increases, and when the pulse width reaches a certain level, the heat conduction energy consumption on the surface of the material also increases. Evaporation causes liquid to splash out of the molten pool, resulting in a smaller cross-sectional area of the welded joint and affecting the strength of the joint.

3. Welding frequency

The influence of welding frequency on the deformation of stainless steel welding is closely related to the thickness of the steel plate. For example, for a 0.5mm stainless steel plate, when the frequency reaches 2Hz, the welding overlap rate is very high;

But when the frequency reaches 5Hz, the weld will burn severely and the heat-affected zone will be wide, resulting in deformation.

The main methods to solve the problem of burn-through and deformation during laser welding of thin stainless steel plates are as follows:

1. Strictly control the amount of heat input on the welding head, select the appropriate welding method and process parameters (mainly welding current, arc voltage, welding speed);

2. Strive to be accurate in the assembly dimensions, and the interface gap should be as small as possible. If the gap is larger, it is easy to burn through, or form a larger welding bead;

3. Hardcover fixtures must be used, and the clamping force is evenly balanced. The key to welding stainless steel sheets is to strictly control the heat input on the welding head of the laser welding machine, and strive to reduce the heat input as much as possible on the premise that the welding can be completed, thereby reducing the heat affected zone and avoiding the above defects.

What is a industrial handheld portable laser welding machine used for ?

handheld portable laser welding machine can be used in welding stainless steel, luminum, copper, chromium, nickel, titanium and other metals or alloys.

Fiber laser welding machine is widely used in IT industry, medical equipment, communications equipment, aerospace, machinery manufacturing, battery manufacturing, elevator manufacturing, craft gifts, household appliances manufacturing, tooling, gears, automobile shipbuilding, and other industries.

The advantages of handheld portable laser welding machine are:

extraordinary cleanliness and precision of work

high processing speed

minimum heat input

excellent welding aesthetics

adjustment of the penetration depth

very high mechanical resistance