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In the tapping process, the state in which the thread of the internal thread is thin, as if it has been gouged out, is called "mountain thinness". There are several possible causes for such a shape.
・ Misalignment of the tap
・Welding
And so on...
Here are some additional points to note:
・Axial expansion
SKS is an alloy tool steel, commonly known as tungsten.
On the packaging box, it is labeled "HIGH QUALITY TAPS".
| Tool NoProduct | Name | Meal SizeTool | No | Product Name | Food | Size | ||
|---|---|---|---|---|---|---|---|---|
| 25011 |
A interrupted -type tap is a tap with a specification in which the thread of the complete tap thread is skipped by one pile.
| A tap in which the threads of the complete peak of the tap have been removed in one pile. |
Homo treatment (steam treatment)
Creates aFe3O4(black rust) film on the surface of the tool
| < characteristics> |
|---|
| Blue-black color |
The cone-shaped part of the tap tip is called " external center ".
This part is attached during the manufacture of taps and is not used during threading.
The presence or absence of external center is determined by the type of tap and the range of size .
straig
forming tap is a tap that processes threads by plastically deforming the minor diameter of the pilot holes. Since the threads are machined without cutting, there are no chips.
forming tap , New Roll Tap, Fluteless Tap, Raised Tap, and Forming Tap also refer to forming tap <
