Quartz Glass Tubes
Quartz Glass Tube for Welding Copper Strand Conductor
A welding aid for butt welding copper conductor that replaces the ceramic tube completely.
View specifications
Quartz Glass Tube Welding Crucibles
Hole diameter 0.3-8.2 mm, length and outside diameter 6-20 mm, ±0.01 mm on the high precision grade.
Product Overview
Quartz Glass Tube Welding Crucibles
The quartz glass tube is the welding crucible used as an aid for copper conductor butt welding. Hole diameter A runs from 0.3 mm to 8.2 mm at ±0.02 mm standard or ±0.01 mm high precision; length B and outside diameter C both run 6 mm to 20 mm at ±0.05 mm. Both ends of the inside hole can be ground and inverted at a cone angle of 45° or 30°.
Specifications
- Hole diameter A0.3 mm to 8.2 mm
- Hole diameter tolerance±0.02 mm normal, ±0.01 mm high precision
- Length B6 mm to 20 mm, ±0.05 mm
- Outside diameter C6 mm to 20 mm, ±0.05 mm
- Cone angle at hole mouthGround and inverted at 45° or 30°
- Softening point1300 °C against 960 °C for ceramic
- Hole wallSmooth and transparent
- Insulation degreeTen thousand times more than ceramic
- Thermal shockExcellent against poor for ceramic
Key Benefits
What This Model Gives You
±0.01 mm Hole Tolerance
Against ±0.1 mm on ceramic. Too tight or too loose both spoil the joint and the outside diameter.
1300 °C Softening Point
Against 960 °C for ceramic, which is why it survives the sudden hot and cold cycle.
Transparent and Smooth
The operator sees the joint form; the smooth wall avoids the cracks a rough ceramic bore causes.
Insulation Ten Thousand Times Ceramic
The published comparison rates insulation degree ten thousand times higher than ceramic — safer and more reliable in service.
Application Scenarios
Where It Is Used
- Copper conductor butt welding
- Automotive cable conductor welding
- Insulation extrusion feed lines
- Any plant currently using ceramic welding tube
Industries
Problems It Solves
Why Buyers Specify It
- A broken conductor at the extruder means an insulation extrusion shutdown and scrap copper
- Ceramic is fragile when the conductor is heated instantly
- An opaque tube makes joint quality a matter of guesswork
Compared With Other Models
The published feature-by-feature comparison against ceramic tube covers hole tolerance, bore smoothness, transparency, cone angle at the hole mouth, resistance to sudden temperature change, softening point and insulation degree. Quartz is rated better or far better on every line.
Reference Sheets
Published Specification Sheets
The manufacturer's own data sheets for this item, reproduced as supplied.
Use Guide
How It Is Set Up and Run
- Measure the conductor and order the hole diameter to match it.
- Specify the cone angle at the hole mouth — 45° or 30° — if the strand needs guiding in.
- Specify high precision ±0.01 mm where the conductor is fine stranded.
- Order as a running consumable, since the crucible is shattered each cycle.
Customisation and Supply
What Is Built to Order
Dies to Your Wire
Dies are manufactured for wire between 0.10 mm and 25.0 mm to suit round or profile wire and rod, to the customer's own specification, at -1% / +2% of the wire diameter.
Your Electrical Supply
On the motorised and hydraulic machines, operating voltage is built to the industrial supply of the destination country. State voltage, phase and frequency with the order.
Export Packing
Machines are packed in a strong wooden or plywood case as stated per model. Carry cases are supplied with the portable welders and the DA10.
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Background Reading
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View specificationsFAQ
Quartz Glass Tube Welding Crucibles Questions
What sizes are made
Hole diameter 0.3-8.2 mm, length 6-20 mm, outside diameter 6-20 mm. Hole tolerance ±0.02 mm normal or ±0.01 mm high precision; length and outside diameter ±0.05 mm.
Has it been validated in production
Yes. The published 28 AWG test on 7/0.127 mm construction with 200 N/mm² minimum tensile records 23.52 N breaking force before welding and 19.6 N after, translated to 220 N/mm², with the result recorded as OK.
Who uses it
The manufacturer records sales to Japan, the Philippines, Thailand, Vietnam, India, China and Taiwan, and states the product has been rated the best by Japanese car cable companies for 3 years.
Can it be customised
Yes. The product can be customised to the customer's requirement, including the ground and inverted cone angle at both ends of the inside hole.
Quote the Quartz Glass Tube Welding Crucibles
Give the wire material, the diameter and the country the machine will run in, and the quote comes back with the die set and the voltage build already decided.