Welding System - Kemwelder V4
Rapid and reliable repairs in tool making and mould building
This welder is designed for mould and dye repair and this can help save you time and money by keeping mould repair in-house instead of sending out for service. It's very easy to use and nearly anyone can begin welding within a very short period of time. It's also mobile, so you can transport this around your company and weld any mould size, large or small and it utilises very little heat so you don't have to worry about heat distortion that you get from traditional TIG welders.
The welder works by gently touching the spot of the welding point with the electrode tip. After 2 seconds, the control unit triggers welding, at the same time, an electromagnet draws the electrode back. You then precisely position the electrode for subsequent points which can then be triggered every second. For safety, the shutter of the microscope closes with each weld.
The KemWelder V4 represents a genuine leap forward in micro-welding technology for tool and mould making. At its core, the machine delivers an impressive 1,200A of TIG amperage — a 66% increase over its predecessor meaning it handles welding wires up to 1mm in diameter with complete confidence. A single press-and-turn button controls everything, and the modern LCD display lets you select your material (steel, aluminium, brass, bronze, or copper) and weld type in seconds. Three selectable welding speeds of up to 3.2Hz mean you can move at a pace that suits both the job and your skill level.
What truly sets the KemWelder V4 apart is its intelligent handpiece and smart software working in tandem. The lightweight, ergonomic handpiece uses an electromagnetic system to draw the electrode back during each weld, while the built-in software actively monitors every pulse — interrupting the weld if excess pressure is detected. This protects both the electrode tip and the workpiece, virtually eliminating tungsten inclusions on sensitive surfaces and dramatically improving consistency across a session. The result is fewer errors, less rework, and a far more reliable finished product.
- 1,200A amperage — welds wires up to 1mm Ø without issue Single-button control — press and turn, nothing more
- Smart fault prevention — software interrupts welds if electrode pressure is too high
- 3 welding speeds — up to 3.2Hz via the speed function
- 5 material presets — steel, aluminium, brass, bronze, copper
- 10x microscope included — with eye-safe LCD filter, LED lighting and hydraulic arm
- Fully mobile — robust carry handles and optional trolley for shop-floor repairs
- Product code for Kemwelder V4: 339237
The included 10x stereo welding microscope completes the package beautifully. With three-stage LED lighting, a hydraulic swivel arm, a powerful 1,200N switching magnet, and an LCD filter that closes in milliseconds during each weld to protect your eyes, it turns precision repair work into a controlled, comfortable process. The 2.5m handpiece cable pairs perfectly with the optional mobile welding trolley, letting you wheel the entire setup directly to a machine for on-the-spot mould repair without disruption.
Contents Include:
- Handpiece with connection hose (2.5m cable)
- Earth/magnetic contact terminal (2.5m cable)
- Collets — 1x Ø 0.6mm and 1x Ø 0.8/1.0mm
- Fine welding nozzles — 1x Ø 3mm and 1x Ø 4mm
- Gas hose — 5 metres
- Brass brush
- Protective shield (green, transparent)
- Stereo welding microscope (10x) complete with:
- Eye protection LCD filter
- LED lighting
- Articulated hydraulic arm
- Switchable magnetic base (1,200N)
- Special electrodes — 10x Ø 0.8 x 50mm and
- 10x Ø 1.0 x 50mm
When welding with the Kemwelder, you must use argon gas to get the best results, the argon gas is going to eliminate oxidation and it is also going to give you clean welds. You will need a bottle of Argon 4.6, and the correct fillers for your material.
Technical Data:
| Supply voltage | ~230 V 50 ~60 Hz, +/-10% |
|---|---|
| Fuse | T 3.15 A |
| Power consumption | 1.000 VA |
| Amperage | 4 A - 1.200 A |
| No-load voltage | 43 V |
| Duty cycle | 80% |
| Pulse Duration | 0.5 - 34ms |
| Welding cycle | Up to 1.4Hz |
| Speed Function | Up to 3.2Hz |
| Shielding gas | Argon 4.6 |
| Gas pressure | 2 bar |
| Protection gas | I |
| Inslation class | B |
| Safety class | IP 21S |
| Dimensions LxWxH | 420 x 270 x220 mm |
| Weight | 11 kg |
Welding rods for the Kemwelder
Only the right welding rods will ensure good results. You will get good results if the composition of the welding rod corresponds to your material. The rods are 333 mm long with a minimum weight of 100 grams. Coils available on request. Please contact us if you do not find the right rod for your application. Wires with a diameter of 0.8 mm welds the Kemwelder without any problems, and with good conditions even up to 1 mm.
| Welding fillers (length 333 mm, Ø 0.4 mm) | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hardness | For | Al | C | Ci | Cr | Cu | Fe | Mg | Mn | Mo | Ni | Si | Ti | Zn | Zr | Code |
| Soft | 1.2311, 1.2312, 1.2162, 1.2738 Modifications and repairs to moulds made of 1.2311, 1.2312, 1.2162 and 1.2738. The welding can be eroded, structured, chrome-plated, etched, nitrated, annealed and hardened. | 0.10 | # | 1.10 | 0.50 | 0.60 | 339108 | |||||||||
| 42 - 46 HRc | 1.2082, 1.2083, 1.2343, 1.2367-1.2606, 1.2767 The filler for highly stressed hot working tools which are simultaneously exposed to high mechanical, thermal and abrasive stresses. E.g. forges for hammers and presses, saddles, aluminium die-casting moulds, plastic moulds, hot shearing blades. Processing with tungsten carbide tools. The welding metal is annealable, nitratable, chrome-platable, CVD coatable, polishable and machinable. | 0.25 | 5.00 | # | 0.70 | 4.00 | 0.50 | 0.60 | 339109 | |||||||
| 53 - 58 HRc | 1.2082, 1.2083, 1.2343, 1.2344, 1.2367-1.2606, 1.2767 For highly wear-resistant weldings on tools, exposed to heavy friction and pressure at high temperatures. Forging tools, roller spindles, hot deburring sections. Processing by grinding or tungsten carbide tools. | 0.35 | 7.00 | # | 1.20 | 2.00 | 0.30 | 0.30 | 339110 | |||||||
| 53 - 58 HRc | 1.2082, 1.2083, 1.2311, 1.2312, 1.2343. 1.2344, 1.2367-2606, 1.2767, 1.2842 For high-wear-firm welds at tools, which are exposed to strong abrasion and pressure at increased temperatures, e.g. Slidegate valve surfaces, guide ways, sealing rims. Good abrasion behavior with glass-fiber reinforced plastics. | 0.35 | 7.00 | # | 1.20 | 2.00 | 0.30 | 0.30 | 339120 | |||||||
| 54 - 60 HRc | 1.2379, 1.2436, 1.2601 Universal for build-up welding on components exposed to heavy impact and moderate abrasion stresses. Also cutting tools and contours in the automobile industry. The welding metal is tough and fracture-proof and edge-retentive. Grindable. | 0.50 | 9.50 | 0.50 | 3.00 | 339121 | ||||||||||
| 54 - 60 HRc | 2.4060, 2.4061, 2.4066, 2.4068 Used for build-up and connection weldings commercially available pure nickel grades, including LC nickel, nickel alloys and nickel-plated steels. Materials of this kind are primarily used in pressure vessel and apparatus construction, in the chemical industry, in the food industry and in the energy industry where good corrosion and temperature properties are required. | 0.10 | # | 3.50 | 55.00 | + | 339122 | |||||||||
| 54 - 60 HRc | GG (grey cast iron) and GGG (globular grey cast iron) materials, miscellaneous types of cast iron Used for build-up and connection weldings of ferritic and austenitic cast irons with spheroidal graphite in addition to mixed compounts with non-alloyed and high-alloy steel, copper and nickel alloys. Build-up weldings on grey cast iron types are possible. | 0.10 | # | 3.50 | 55.00 | + | 339123 | |||||||||
| 54 - 60 HRc | connections of various different materials. 1.2316 For build-up and joint welding on steels which are difficult to weld. For bufferings and connections on cold and hot working tools. | 0.10 | 30.00 | # | 1.60 | 0.40 | 339124 | |||||||||
| 220 HB | Cu-Al multi-alloy bronzes, platings on cast and steel materials For build-up, crack and joint welding on Ampco bronzes, e.g. cooling inserts in plastic moulds, fittings, drawing tools or aluminium- bronze-steel mixed joints. | 7.50 | # | 2.50 | 13.00 | 2.50 | 339125 | |||||||||
| 140 HB | Cu-Al multi-alloy bronzes, platings on cast and steel materials, in addition to mixed joins of different materials For connection and plate weldings on CuAl bronzes. Mixed joins of CuAl bronze with steel in addition to various different materials with one another, build-ups on tool steel or cast alloys. Platings on steel and cast iron materials. Good sliding properties, seawater-resistant and cavitation-resistant. | 8.00 | # | 2.00 | 2.20 | 2.20 | 339126 | |||||||||
| 140 HB | aluminium | # | <0.4 | <0.2 | 5.00 | 339127 | ||||||||||
| 140 HB | aluminium | # | 0.20 | 12.00 | 339128 | |||||||||||
| 140 HB | ALMg2,7Mn, AKLMg4,5Mn, ALMg5, ALMgSi0,7, ALMgSi1, ALMgSiCu, ALZn4,5Mg1, G-ALMg3, G-ALMg5 | # | 0.05 - 0.25 | 0.05 | 0.40 | 4.5 - 5.2 | 0.7 - 1.1 | 0.25 | 0.15 | 0.25 | 0.1 - 0.2 | 339129 | ||||
Welding fumes extractor and filter
The advantages of working in an environment free of welding fumes and dust are significant. During welding operations, especially prolonged ones, the reliable extraction of welding fumes is crucial. Similarly, fine dust generated during grinding and other related activities should also be extracted to prevent inhalation of these substances. We have been diligently searching for a highly capable, efficient, and portable extraction solution, and we are pleased to introduce the Extractor III. This innovative device offers an impressively quiet and effective means of extracting fumes and dust, all at a remarkably affordable price. The Extractor III incorporates a brushless suction motor, which sets it apart from conventional extraction systems. This motor operates silently and boasts a remarkably long lifespan, contributing to the device's exceptional performance and reliability.
Mobile Extraction Unit - Product code: 339263
Stay Put Arm 75mm - Product code: 339264
Technical Data:
| Maximum flow rate: | 235 m³/h |
|---|---|
| Electrical power: | 1Ph., 220V, 50Hz |
| Dimensions (WxDxH): | 420 x 400 x 245 mm |
| Noise level: | <50dBA in the workspace |
| Weight: | approximately 15 kg |
| Filter stage 1: | Prefilter for coarse dust |
| Filter stage 2: | Fine filter EU5 for 98% >3μm |
| Filter stage 3: | Activated carbon and fine filter 99.97% <0.3 μm |
