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Factory Equipment Process

01. Quenching
Electric furnace that maintains temperatures above 800 degrees

02. Tempering
A special furnace that stores data records for many years and determines and maintains the highest tempering temperature for steel.

03. Quenching and tempering furnace
Utilizing our many years of experience, the temperature for "hardening" and "tempering" is kept at the highest quality for blade steel.

04.ICHIKAWA polishing machine 2 units
① Thin the center
② The komi is thicker and thinner closer to the board.
3) Thick and complex three-dimensional machining of the blade


05. Buffing (removing rough edges)
Superior polishing with our unique motor rotation

06. NAGASE Surface Polishing Machine
Conventional buffing requires a lot of time and effort to remove distortion and correct the distortion.
Polishing is even, and distortion of the board such as scallops is greatly reduced.

07. NAKAYA FullAutoMATIC
In July 2005, we introduced the latest sharpening machine from Nakaya Co., Ltd. in Sanjo City.
Wheel control is also incredibly precise, so the same wheel lasts three times longer than with conventional sharpening machines.
This allows for highly precise sharpening!

08. NAKAYA FullAutoMATIC
We use a highly accurate machine to make the height of the upper teeth, front blade, and back blade uniform. This can be adjusted to an accuracy of 0.001, which is impossible for humans to do.


09. NAKAYA automatic feeder
24-hour automatic supply

10.NAKAYA アサリ機
With many years of experience, we store clam width data for each size, and inspect the clam width one by one for both horizontal and vertical cutting (we use our own original caliper for measurement, which is a trade secret and cannot be shown to you).


11. NAKAYA Clam Reeling Machine Vertical Pull
Realizes a width that fits into the vertical grain of wood

12. NAKAYA Vertical Upward Eyes
Although it can be cut with conventional vertical cutting, we have conducted extensive research to achieve the ideal angle to increase the cutting speed.

13. NAKAYA Deburring
Remove cut burrs, upper burrs and oil stains with tremendous water pressure
A machine that prevents the impulse at the cutting edge from causing troquettes and machinés.If this machine is not used, the impulse will affect the cutting quality of the saw.

14.NAKAYA衝撃焼入(インパルス)
Previously, we used the "vacuum tube method" to treat the cutting edge of hard tools, but this method sometimes caused the cutting edge to become dented. In that case, we dealt with it by cutting off the dented part of the cutting edge, but this has the disadvantage of reducing durability because it removes the essential hardened part.
Therefore, our company introduced the most advanced "ultra-high frequency induction heating equipment" in 2002. This method allows impact hardening to be performed without any nicks or dents on the cutting edge.


15. NAKAYA wheel correction machine
Cut the foil to the best angle for each size

16. Removing distortion (correcting distortion)
This is truly a work of art.
Sakure Hisumi breathes life into the hands of the craftsmen who use it, resulting in the best possible finish for the saw.

17.硬度計
Even a single saw board has seven height measurements to ensure uniformity

18. Projector
Each piece is inspected in six places using a projector. Saw boards with warping and bending have different heights on the front and back teeth, so they are corrected to make the height uniform to the nearest 0.001.


19.Impulse Inspection Projector
The blade is made flexible so that it does not break, and the hardness is increased only in the most important areas of the blade.
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