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Product Specification
Norm: ±0.02mm
High-precision: ±0.01mm
Note:
Name
Range
Tolerance
Inner Diameter
0.3-8.2mm
Outside Diameter
6-20mm
±0.05mm
Length
6-20mm
±0.2mm
Performance
Quartz glass tube
Ceramic tube
Function and influence
Hole diameter tolerance
±0.01mm
±0.1mm
The accuracy of ceramic tube is not
enough, and too tight or too loose when the conductor is going through
ceramic tube, which will affect the welding quality, while the glass
tube will avoid it.
Smooth degree of hole wall
Smooth
Rough
The ceramic tube owns rough surface wall,
and the welding joint is much rougher, it is easy to cause cracks and
not solid, while the glass tube will avoid it.
Transparency degree
Transparent
Opaque
Using glass tube is more convenient for
the operator to observe whether the jointing ends are fully aligned or
fused together, and easy to control the welding quality.
Cone angle of hole mouth
Better
Good
The glass tube is convenient for operator to thread the strand.
Capacity against sudden change for hot and cold
Excellent
Poor
The ceramic is fragile when the conductor is heated instantly, while glass tube will avoid it.
Softening point
1300℃
960℃
The quartz tube bears higher temperature than ceramic tube.
Insulation degree
Ten thousand times more than ceramic
Excellent
The quartz tube is safer and more reliable than ceramic.
The Effect of Welding
