How does the mold laser welder control the welding porosity Tongfa professional provides

Mold laser welder is a kind of equipment that uses laser beams for welding, which can produce a laser beam with high energy density on the surface of the mold, and realize the repair and processing of the mold by melting the metal on the surface of the mold. Welding porosity is a common problem in the process of mold laser welding, because porosity will reduce the strength and quality of welding. In order to control the welding porosity, the mold laser welding machine has taken the following measures:

1.Control welding parameters: The mold laser welder can control the generation of welding porosity by adjusting the welding parameters.

Welding parameters include laser power, laser beam diameter, welding speed, welding angle, etc. By selecting and adjusting these parameters reasonably, the heat distribution during the welding process can be more uniform and the generation of porosity can be reduced.

2.Optimize the welding process: The mold laser welder can control the welding porosity by optimizing the welding process.

The welding process includes the welding path, welding sequence, number of welding layers, etc. By rationally designing the welding path and welding sequence, the heat distribution in the welding process can be more uniform and the generation of porosity can be reduced.

3.Use shielding gas: Mold laser welder can use shielding gas to control welding porosity during the welding process. The shielding gas can form a protective layer in the welding area, preventing oxygen and moisture from the air from entering the welding area, reducing the generation of porosity.

4.Clean the welding surface: The mold laser welder needs to clean the welding surface before welding to remove the dirt and oxides on the surface. Cleaning the weld surface can improve the quality of the weld and reduce the generation of porosity.

In short, the mold laser welding machine can effectively control the generation of welding porosity and improve the welding quality and efficiency by controlling the welding parameters, optimizing the welding process, using shielding gas and cleaning the welding surface.

1.Before the repair welding operation, turn the clear scheduling knob on the outside of the eyepiece barrel of the microscope clockwise all the way so that the two eyepiece barrels are at the same height. This is so that the clarity seen by the two glasses is consistent when looking at the workpiece.

2.During operation, the workpiece is placed on the workbench, and the workbench is moved up and down, so that the workpiece is in the clearest state in the field of view of the microscope by observing the workpiece in the microscope.

When we repair any workpiece, the workpiece should be in a clear state, one is to ensure that the focal length height is met with clarity, and the other is to clearly see the repair welding process to ensure the quality of repair welding.

3.When repairing welding, it is strongly requested that the customer must observe the workpiece with two eyes at the same time while using the microscope, and the eyes should not be close to the eyepiece or far away from the eyepiece, and it should be kept about 5 to 10 mm. ——Henkel Machinery.

Mold laser welding machine, also known as mold laser repair welding machine, or simply mold welding. The mold laser welding machine knows its master by listening to the name.

To use, it's very simple and straightforward. Mold welding is specially used in the repair and welding of molds. Because of its simple welding operation, fast speed, good welding repair effect, beautiful appearance of the welding, and little thermal impact on the material itself, so.

It is used in mold welding very much. In addition, mold laser welding machines are also used in the welding process of other products. Let me give you a brief introduction to the mold laser welding machine.

Now the most commonly used yag solid-state laser mold laser welding machine, yag laser, for its English simplified name, or Chinese called yttrium aluminum garnet crystal, yttrium aluminum garnet crystal for its activation.

The content of nd atoms in the body crystal is a solid laser, which can excite a pulsed laser or a continuous laser, and the mold laser welding machine uses a pulsed laser. The emitted laser is infrared, wavelength.

When the activated material is placed between two mirrors parallel to each other (one 100% reflective and the other 50% transmissive), an optical resonator is formed, in which it is transmitted axially.

The monochromatic spectrum is discharged from the resonator cavity, and the axially propagating monochromatic spectrum propagates back and forth in the cavity.

When the monochromatic spectrum propagates back and forth in the laser substance, it is called "self-oscillation" in the resonant cavity. When the pump lamp provides enough high-energy atoms within the laser substance, the atoms with the high energy level spontaneously emit between the two energy levels.

There are three processes: transition, stimulated emission transition, and stimulated absorption transition. The stimulated light produced by the stimulated emission transition has the same frequency and phase as the incident light. When the light is repeated in the resonator through the "particle number reversal state."

After activating the substance, the light intensity of the monochromatic spectrum of the same frequency is increased to generate a laser, and the high permeability of the laser can be emitted through 50% of the transmissive mirror in the resonator, which can become a continuous laser.

There are also mold laser welding machines for fiber transmission or fiber lasers, but they are rarely used. Because the mold laser welding machine of fiber transmission and fiber laser is not much better than the mold welding of yag solid-state laser in terms of mold welding, but it is much higher, especially the mold welding of fiber lasers, the cost of that one can buy six or seven yag mold welding.

Then there is the laser power supply. Now the domestic laser power supply has been more mature, many laser welding machine manufacturers also develop their own laser power supply, laser power supply is to provide pump energy to the laser, its direct object.

It's a laser xenon lamp. The laser power supply can control the intensity and repetition rate of the laser output. The power and stability of the laser power supply play a very critical role in the performance of a mold laser welding machine. According to the way of working, it can also be divided.

It is a continuous laser power supply and a pulsed laser power supply. If you look at the weld spots of the mold laser welding machine under the microscope, you will find that the weld spots are composed of one point at a time, which is the pulsed laser. The popular understanding is the following.

Lasers are emitted.

The working principle of the laser mold welding machine is to use the welding technology of laser high heat energy and concentrated fixed point to effectively deal with all the tiny parts of the welding and repair work, which makes up for the shortcomings of the traditional argon arc welding technology in repairing the fine surface of welding. The two thresholds of thermal strain and post-treatment are avoided, which greatly saves the production cycle of the mold.

1.Repair quality: extremely high welding strength, complete metallurgical welding, Sui gas protection, no blackening, no oxidation, all post-processing such as milling and filing can be done at the repair site.

2.High repair accuracy: round wire patch can be used for repair, the original datum will not be lost, the excess solder is less, the later shaping is easy, and the minimum repair amount is the diameter of the patch).

3.Fast repair speed: The fastest repair volume can reach 100 mm3 min (which is absolutely surprisingly fast in the field of cold weld repair).

4.Small damage to the substrate: the hot spot is small, and it will not cause the annealing deformation of the substrate.

5.Reasonable power distribution: controlled by a microcomputer chip, the best power can be obtained from a variety of materials with different diameters.

6.Wide range of voltage adaptation: when the voltage change fluctuates in the range of 20%, the machine can still ensure normal operation and maintain stable output power.

7.Convenient electrical connection: equipped with fast and strong magnetic connectors, it can be easily connected and installed. The workpiece is not limited by size.

8.Solderable materials: In addition to materials with very low melting points such as zinc and tin, and cemented carbide, workpieces made of various metal materials, including copper and aluminum, can be repaired.

9 Repair welding modes: micro beam welding, resistance welding, precision argon welding.

10.Power mode: microbeam welding (multi-mode, single-point continuous). The output current is adjustable; The output pulse time is adjustable.

11.Solder mask mode: (single point continuous), fixed wire diameter adjustable.

12.Precision argon welding: The output current is precisely adjustable, and the minimum repair current can also stabilize the arc starting.

13 Cooling shortage mode: fan forced air cooling.

15 Pulse frequency during continuous output: multi-gear adjustable.

16 Main unit volume: 380 150 200mm3

17 Weight: about 14 kg

Precision laser mold welding machine can be welded with a wide range of pure Dahe materials, including: cold work high alloy steel, hot forging high alloy steel, nickel-containing tool steel, high-grade steel, copper alloy, beryllium copper, high toughness aluminum alloy and other materials to make gold imitation materials.

Model HT-WY180-MK(A) Three-axis travel of the worktable X=300mm, Y=200mm (X, Y manual adjustable, Z-axis electric lifting) Workbench Load 200kg Equipment weight 300kg Machine power supply 220V 10% 50Hz or 380V 10% 50Hz Laser Parameters Laser Type ND:YAG Pulse Spot Adjustment Range Spot Size 0 2-3 0mm Laser wavelength 1064nm pulse duration 20ms Maximum laser power 180W Pulse Frequency 50hz Laser output focal length 80mm 100mm 120mm (optional) Laser cooling Water cooling Observation system Microscope (rotatable 360) Shielding gas 1 channel (argon) Solder parameters Wire diameter.