Introduction to multi metal defect repair cold welding machine, cold welding repair machine for repa

Precision mold repair cold welding machine, casting defect repair cold welding machine, metal defect repair cold welding machine) can be used for metal workpiece wear, scratches, porosity, cracks, defect deformation, hardness reduction, trachoma, damage and other defects for deposition, sealing, filling and repairing functions.

The metal defect repair cold welding machine can deposition, seal, fill and repair the defects such as wear, scratches, cracks, defect deformation, hardness reduction, trachoma, and damage of metal workpieces. It can also form a wear-resistant layer, corrosion-resistant layer, heat-resistant layer, oxidation resistant layer, impact resistant layer, anti-slip layer, high adhesive layer, weldable layer, conductive layer and other strengthening effects on the metal surface.

In use, there is no thermal deformation, no cracks, no hardening, repair at room temperature, does not affect the machining performance, and can be used for turning, milling, planing, grinding, polishing and electroplating and other post-processing.

Metal defect repair cold welding machine is suitable for: molds. Foundry. Die casting. Mechanical parts. Auto. Large shafts. Printing and dyeing equipment. Hydroelectric power. and other metal surface defect repair applications.

Cold welding machine parameter table:

Input voltage (v) phase. Frequency (Hz): AC220V 10: single phase, 50 60Hz

Power (kva):

Output voltage, continuously adjustable (V): 20-150

Frequency conversion range (number of discharges in seconds) (Hz): 50-1900

Electrode size (mm):

Number of Configurable Welding Cavities: 1

Dimensions (wxdxh mm): 500 270 340

Weight: 36kg

SH-1600 Metal Defect Repair Cold Welding Machine Features:

The power realizes real cold welding, the workpiece does not need to be preheated or insulated during the repair process, and there is no heat input in the instantaneous process of surfacing welding, so the workpiece does not deform, anneal, undercut and residual stress, and does not change the metal structure of the workpiece.

2.The repair bond strength is high, because the electrode is ionized by the arc in an instant and transferred to the workpiece in contact with it, so the bond strength is high and will not fall off.

3.The repair accuracy is high, and the coating thickness is from a few microns to a few millimeters, and only grinding and polishing are required. It can also be used for post-processing such as turning, milling, planing, grinding, and electroplating.

4.It can be used for multiple purposes, and can be used for surfacing repair, surface strengthening and other functions.

6.It is suitable for a wide range of substrates, including all kinds of die steel, stainless steel, tool steel, cast iron, cast aluminum, aluminum alloy, copper alloy, nickel alloy, etc., as well as all conductive conductors.

7.Good environmental performance, no noise, dust, waste liquid, strong light, peculiar odor.

8.Even if the repair overlay is worn, multiple repair overlays can be performed at the same site.

9.By using inert gas protection such as argon, a high-quality surfacing layer can be obtained.

10.Due to the use of rotary electrode, there is no adhesive wire formation, easy operation, high-quality overlay layer is obtained, and the margin of surfacing layer can be controlled to a very small size, thus saving finishing time. Large, popular, mainly used in mold, casting, die-casting, electric power, locomotive, metal processing and other industries repair.

Equipment features: advanced technology: unique chopper soft switch technology, accurate output control.

High efficiency and energy saving: Although the power is only 600W, the speed and effect of welding repair are several times that of the same type of 2000W.

High welding strength: Due to the high single-point output energy of this welding machine, each single point of the welding material is combined to the substrate in a molten state to form a metallurgical bond and produce a strong bonding force.

Excellent welding effect on copper and aluminum: due to the instantaneous high energy output, it effectively solves the welding repair of high conductivity metals such as copper and aluminum, and overcomes the shortcomings of ordinary ignition surfacing welding.

No annealing and deformation of the substrate: the substrate does not need to be preheated, and the process of surfacing welding is a repeated process of instantaneous heat input and loss in the micro-area, and the substrate will not have excessive temperature rise, so there is no deformation, undercut and residual stress, and no local annealing will be produced.

High repair accuracy: the thickness of surfacing welding is from a few microns to a few millimeters, only grinding and polishing, and the color difference is small or no color difference after repair.

One machine for multiple purposes: it can be used for surfacing welding, surface strengthening and other functions. It can weld and repair ferrous metals (ductile iron, gray iron, stainless steel, etc.) and non-ferrous metals (copper, aluminum, etc.).

Environmental protection: no pollution in the working process.

Usability: It is easy for anyone to use, no operation certificate is required, and surfacing welding can also be carried out in difficult welding places.

Economical: Immediate repair on site, increasing productivity and saving costs.

Equipment application: automotive parts casting products: repair of casting defects such as automobile crankshafts, pistons, cylinder blocks, intake and exhaust pipes, brake discs, etc., such as sand holes, pores, etc.

Machinery industry and machine tool industry: correction of out-of-tolerance or worn workpieces, such as repair of machine tool guide rails, beds, shafts, gear parts of large machinery, cold and hot rolls for steel rolling, hydraulic rods of construction machinery, printing machine cylinders and other various parts of the welding repair.

Aviation and shipbuilding industry: compressor housing, air compressor housing, stainless steel precision parts, precision shafts, etc.

Product repair in petrochemical, coal, construction machinery and many other industries.

Non-ferrous metal parts in various industries, such as aluminum alloy parts of SF6 transformers in the power industry, aluminum alloy cylinder blocks, cylinder heads, and hubs in the automotive industry, aluminum alloy impellers and aluminum alloy radiators for fans, etc.

Copper alloy plumbing valves, pipe fittings, etc.

Injection mold: welding repair of mold wear, bruises, scratches, etc., to eliminate flash and burr of the product.

Die-casting molds: The corrosion, shedding, and damage of zinc-aluminum die-casting molds, as well as the surface strengthening of cavities and sprues, prolong the service life of molds.

Applicable welding consumables: Due to the unique control mode of ESD-05, the output energy is high and the control is accurate, so the applicability of welding consumables is extremely wide. In addition to the conventional professional welding consumables for EDM surfacing welding, most of the straight welding consumables with diameters used in other welding machines are applicable, and ordinary welding rods can also be used after peeling.

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1.Scope of application of cold welding repair machine:

Cold welding repair machine is a professional precision repair welding equipment for pinholes, sand holes, pores, cracks, bumps, scratches, pits, surface wear of mechanical parts, mold wear and other small defects of castings. It is widely used in mold industry, casting industry, electrical appliance manufacturing industry, medical equipment, automobile, shipbuilding, boiler, construction, bridge construction and other industries.

2.Applicable materials for cold welding repair machine:

The cold welding repair machine uses ordinary welding wire as a supplementary material, and the range of welding wire that can be clamped is between. The materials that can be welded and repaired are: gray iron, ductile iron, stainless steel, carbon steel, die steel, aluminum, aluminum alloy, and other metals that can be repaired as long as they are conductive.

3.Working principle of cold welding repair machine:

1) The principle of the cold welding repair machine is to use the charging capacitor, with a cycle of 1 10 3 10 seconds, and an ultra-short time discharge of 5 10 6 10 seconds, the contact part between the electrode material and the workpiece will be instantly heated to 8000 10000, and the molten metal in the state of plasma quiet grinding will transition to the surface of the workpiece in a metallurgical way. Due to the alloying effect with the base metal, it spreads to the inside of the workpiece, melts and infiltrates, and forms a diffusion layer, which obtains a high-strength bond.

2) The principle of cold welding (low heat input): Why can cold welding be realized? Because the discharge time is extremely short compared to the next discharge interval, the machine has enough relative stopping time, and the heat will be diffused to the outside through the workpiece primitive, so there will be no heat accumulation in the machined part of the workpiece.

Although the temperature of the workpiece is almost at room temperature, the temperature of the electrode tip can reach about 10,000 due to instantaneous melting.

3) High bonding strength: When using the CNC intelligent cold welding repair machine for repair surfacing welding, the heat input is low, why is the bonding strength still very large? This is because the wire instantly generates molten metal droplets that transition to the contact point with the base metal, and at the same time, due to the high temperature of the plasma arc, a strong diffusion layer is formed deep in the surface layer as if it had taken root, showing high adhesion and not falling off.

4.Cold welding repair machine repair features:

1) Low-heat and normal temperature welding, the matrix does not heat, does not produce thermal deformation, the metallographic structure near the welding repair point remains unchanged, there is no stress, no cracks, no hard spot hardening, and does not affect the machining performance.

2) Simple operation, one machine for multiple purposes. In addition to the surfacing repair function, tungsten carbide and other tungsten carbide surface coating enhancement can also be performed.

3) Argon gas has good protective tightness, high welding strength, metallurgical bonding, re-solidification after the compound and the substrate are melted at the same time, and the bond is firm, dense and does not fall off. After welding, it can be used for various machining such as turning, milling, planing, and grinding.

5) Rotary self-destructive electrode deposition surfacing welding, easy to operate and high work efficiency.

6) Environmental protection and pollution-free. No harmful gas is generated, it can be directly held, Qishi bucket eyesight, accurate welding position, small welding repair point, and small post-welding trimming amount.

7) The welding repair process is the repeated melting and accumulation of high-frequency welding repair points, regardless of the size of the defect, as long as the pen tip can touch the place can be repaired.

8) Pure metal repair, no welding traces, welding repair effect meets the quality inspection standards.

The cold welding repair machine, also known as the die cold welding machine, can release the welding energy in a very small range in an instant, so that the supplementary material is completely welded to the workpiece. The overall heat generation of the workpiece is very small, so it can avoid the shortcomings of traditional welding, such as deformation, cracks, and discoloration, and is especially suitable for repairing fine workpieces and workpieces that cannot be welded at high temperatures.

The repair cold welding machine is internationally called ESD (Electro Spark Deposition), which was developed by experts in the former Soviet Union by applying the circuit principle similar to that of electro discharge machining. The main use is to use high-hardness tungsten carbide and other materials to coat the metal surface of the mold to improve wear resistance, heat resistance, burn-out resistance and other properties.

It is widely used in mold manufacturing, aerospace industry, automobile manufacturing and repair industry, shipbuilding industry, machinery industry, foundry industry, power industry, chemical industry and equipment manufacturing and other fields. Using the international leading cold welding technology, through the mold without heat surfacing welding, in order to ensure the integrity of the mold and other workpieces, you can also use the strengthening function to strengthen the mold, to achieve the wear resistance, heat resistance, corrosion resistance and so on.

a. Depressions, holes, and holes in the plane part.

b. Fine seams and grooves.

c. Edges, edges, and peaks.

d. The depression of the surface after sand hole and ordinary argon arc welding.

e. Welding repair EDM, nitriding and soft desalination treatment of the mold.

During the use of the mold, the mold groove gradually wears out and the size exceeds the tolerance range, or serious thermomechanical fatigue cracks occur locally, or the wear is uneven. This affects the surface quality of forgings, and even makes it difficult to mold. The traditional mold repair method either treats the vernier but does not cure the root cause and cannot be completely repaired, or it is the use of electric welding, which is not easy to grasp, and the electric welding heats up, which may cause the scrapping of the whole set of molds.

Jielite mold repair cold welding machine adopts cold welding composite repair process, which can completely repair the mold damage of the Qin key pin, and at the same time, ensure that the accuracy of the mold is not affected, and the bright is in the middle, because we choose special alloy materials in the material, the local performance of the repaired mold can exceed the new product.