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Thread tools \ Technical introduction – thread forming

Coatings and surface treatments for thread forming

Process:
In contrast to tapping, where sections are cut out of the material, thread forming is a non-cutting, pressure forming procedure.
Advantages:
ƒ No chip formation
ƒ Up to 30% higher surface quality than with thread cutting
ƒ Up to 40% higher processing speed than with thread cutting
ƒ Threads in through holes and blind holes can be produced with the same tool
ƒ Wide range of materials processable
ƒ Cutting of thread eliminated
ƒ Thread pitch and thread angle errors as with cut threads eliminated
ƒ Shaped threads have higher strength owing to non-continuous cut
Requirements: For all shapeable materials with elongation >10 %.
Titanium nitride Titanium carbon nitride
This universal coating is suitable for so�er steels TiN Its high level of hardness makes titanium carbon TiCN

and non-ferrous metals. It is only of limited suita- nitride coating very well suited to all steels as well
bility for high-strength steel and stainless steels. as stainless steels, titanium and cast materials
ƒ Vickers hardness: 2200–2300 HV above GGG50.
ƒ Friction coeffi cient: 0.5 ƒ Vickers hardness: 3000 HV

ƒ Temperature resistance: 500–600°C ƒ Friction coeffi cient of steel: 0.2
ƒ Colour: Gold ƒ Temperature resistance: 400°C
ƒ Colour: Blue grey
ƒ (anthracite) lubrication: Oil/emulsion
Titanium aluminium nitride Aluminium chrome nitride
The titanium aluminium nitride coating is suitable TiAlN The aluminium chrome nitride coating achieves AlCrN
for steels and for alloyed heat-treated a very long service life due to its wear resist-
steels, tool steels, high-speed steels, stainless ance, oxidation resistance and high-temperature
steels, titanium, hardened steels and nickel-based hardness. This coating is only suitable for steel
materials. materials in combination with oil as a coolant.
ƒ Vickers hardness: 3200 HV ƒ Vickers hardness: 3200 HV

ƒ Friction coeffi cient of steel: 0.2 ƒ Friction coeffi cient of steel: 0.35
ƒ Temperature resistance: <800°C ƒ Temperature resistance: <1100°C
ƒ Colour: Blue-grey (anthracite) ƒ Colour: Grey blue
ƒ Lubrication: Oil/emulsion ƒ Lubrication: Oil
CARBO
The CARBO coating is an extremely hard layer and CARBO
was developed for all non-ferrous metals such as
copper, brass and aluminium. Built-up edges are
signifi cantly reduced by the high level of hardness

and low friction coeffi cient.
ƒ Vickers hardness: 6000 HV

ƒ Friction coeffi cient: 0.1
ƒ Temperature resistance: 700°C
ƒ Colour: Black
ƒ Lubrication: Oil/emulsion
h For more detailed information and explanations, refer to the technical manual.

Source: Hahn+Kolb Werkzeuge GmbH
Technical data subject to change. www.iconridge.com
Availability subject to country specific rules and regulations. 130

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