Model THP Tweezer Handpiece A successful resistance spot welding process generally requires a welding power supply, a spot welding head, and a weld monitor or weld checker. Selecting the right accessories for these critical components can enhance and improve your results, and provide additional safety for your operators. • Includes 1 Pair ET0402 Electrodes HANDPIECES Generally speaking, welding handpieces should be used only when it is impractical to use a welding head. Their relative ease of use, combined with low maintenance and flexibility, make them wellsuited for small batch production and R&D environments. Model PHP Probe Handpiece • Includes 1 Pair EP0402 Electrodes for handpiece and 1 pair EP0802 for probe • Both the Model THP tweezer, and PHP probe handpiece are used to weld small parts which require less than 125 watt-seconds or 1/2 cycle AC, and welding forces less than 7 pounds. The Model HFP high force probe is used for applications which require higher energy and/or force than either THP or PHP. All three models are force fired to ensure repeatability. Model HFP High Force Probe • The Model GHP and HDHP are switch fired handpieces and can be used to weld or tack materials that don't require stringent force control. Handpieces are available with either 4 ft or 10 ft long cables. As a general rule, the energy delivered to the workpiece with 10 ft #6 cables will be approximately 15% of that delivered with 4 ft #6 cables. Handpieces are furnished with cables, as indicated in the following table, and one pair of RWMA electrodes. • Includes 1 Pair EP0802 Electrodes Rating DC (watt seconds) AC (KVA-1/2 cycle) Force Range – Max (Min) • Includes 1 Pair EP0802 Electrodes, straight extension and 30° elbow adapter Cable Size (AWG) Cable Length Electrode Series Model HDHP Heavy Duty Handpiece • Includes 1 EP0902 Straight Electrode, 35 or 90 degree electrodes available 4-30149-02, 10 ft #2 gauge grounding cable sold separately Model VBTWK/115, Ball Tacking Kit • Includes vacuum pump, vacuum adapter, tubing and 2 electrodes for 1mm ball. Used with GHP and HFP 10-400-01, VBTWK/115V 10-400-02, VBTWK/230V RESISTANCE WELDING

RESISTANCE WELDING OPTIC ACCESSORIES The Model SMZ-660 Stereo Zoom Optic Pod (1) is supplied with 10X Eyepieces and a 0.5X Objective Lens. It provides magnification which is adjustable from 4.0-25X and a working distance of 211 mm. Its lightweight housing is airtight, anti-mold and anti-electrostatic. It includes the C-Bonder Arm and is compatible with any Model 50 or 80 Series Miyachi Unitek welding head. The Model OMA optic mounting assembly (2) provides the posts and hardware required to support the optic pod. The Model BPTL, Thin-Line base plate (3) is drilled to accept all 80 Series Thin-Line...

WATER CHILLERS Spot welding, fusing and brazing are all processes that can eject material of various sizes from the part. Fume extractors are necessary to remove harmful airborne particles so that operators and engineers are not exposed. These sometimes toxic fumes need to be collected and properly filtered. Use the following table to identify the best fume extractor for a given process: Water chillers are necessary for cooling higher powered welders. They control the temperature of the water to keep condensation from building when facility water cannot. The following chillers provide the necessary...

RESISTANCE WELDING FOOTSWITCHES FOR AIR ACTUATED HEADS The Model FS2L two-level footswitch is intended for use with all Miyachi Unitek power supplies. The first level actuates the weld head via the air valve driver of the power supply; the second level, along with the force firing switch in the weld head, initiates the welding current. The Model FS1L one-level footswitch also may be used with all Miyachi Unitek power supplies. The single level switch actuates the weld head and initiates the welding current simultaneously (when the firing switch closes). Single level Firing Switch without safety...

RESISTANCE WELDING ELECTRODES Highly conductive workpiece materials generally require electrodes of high resistance. Similarly, hard materials require softer, copper-based electrodes. When welding dissimilar materials such as copper and nickel, the normal choice would be a molybdenum electrode against the copper and a GLIDCOP electrode against the nickel. If stored energy or half-cycle equipment is used to weld dissimilar materials, place the more resistive material against the negative electrode. Likewise, if similar materials with thickness ratios greater than 4:1 are welded, place the thinner...

RESISTANCE WELDING ES0800E - .245 in dia. ECCENTRIC STRAIGHT ELECTRODES Used with 88, 89 and 188 weld heads and HE38V and HE88 holders ESG0402 - 1/8 in dia. STRAIN GAUGE ELECTRODES Used with THP Model Material ESGO0402 RWMA 2 ESG0400 Series Electrodes For Strain Gauges 6-32 NC2 Thread ET0400 - 1/8 in dia. TWEEZER ELECTRODES Used with THP AND PHP Model ET0402 ET0403 ET0411 ET0413 ET0420 ET0450 Other Electrodes ETB Table Electrodes – RWMA 2 Material RWMA 2 RWMA 3 RWMA 11 Insert RWMA 13 Insert Moly Insert GLIDCOP * Copper Alloy ** Refractory Alloy Insert Material RWMA 2 RWMA 3 GLIDCOP Moly Insert...

Unibond electrodes are used for parallel gap bonding and reflow soldering. Generally, RWMA2 copper Unibond electrodes are used with resistive and/or hard materials such as gold plated kovar and nickel. Molybdenum Unibond electrodes are used for bonding conductive or soft materials such as copper or gold. The face of a Unibond electrode is 0.020 in (0.5 mm) wide by 0.030 in (0.75 mm) deep. In unfixtured applications, this limits their use to bonding ribbons (wire) which are at least 0.010 in (0.25 mm) wide because of the limited visibility. FACE Length Copper Clad Moly Unibond electrodes UNITIP...

RESISTANCE WELDING CABLES, TERMINALS, CONNECTORS AND ADAPTERS 4-35670-01, Voltage cable, 6 ft long with #2 stud size ring terminals 4-35670-02, Voltage cable, 6 ft long with #6 stud size ring terminals 4-35670-03, Voltage cable, 6 ft long with #8 stud size ring terminals Common size weld cables, sold in pairs 4-36578-01, Voltage cable, 15 ft long with flying leads (large scale applications typically) 10-381-01, Firing switch Extension Cable, 6 ft long C 18-045-01, Transformer Sense Cable, 15 ft long, #18 AWG Firing Switch Plug-Male 520-001 #18 AWG 4-PIN Female Receptacle for Footswitch 550-006...