Обший каталог Yamawa 2016 - 2017

Каталоги Yamawa твердосплавные метчики для закаленной стали

Краткое руководство Yamawa по каталогам

Общий каталог Yamawa 2021

Общий каталог Yamawa 2022 - 2023

19. Surface Treatment 19.

■Nitriding ■

In this treatment, we have Nitrogen and Carbon soak into the surface of HSS tools, and react with chemical of HSS material to produce hard nitride. There are 3 methods in the treatment, composition gas method, salt bath nitride method and ion nitride method.

M3×0.5	2.64	2.62	Salt bath nitride treatment is shifted into gas nitride treatment method because of cyanic environmental pollution.	■
M4×0.7	3.54	3.52	The temperature of treatment is 500 to 550 degree. Hardness and depth of the treatment can be controlled by active nitrogen concentration and
M5×0.8	4.40	4.38	reaction time.
M6×1	5.30	5.28	The high hardness of tool surface minimizes chemical attraction. Result is less welding and friction reduction. Great improvement is expected in
M8×1.25	7.10	7.07	tool's performance.

We have found out the best combinations of hardness and toughness through our treatment technology The nitride treatment will be widely applicable to the taps for such workpiece materials as gray cast irons, special cast irons, aluminum diecastings with higher silicone content, copper alloys, and resinoids (plastics). These materials produce small segmental chips and are very abrasive. We combine nitrogen and oxidizing for comparatively sticky material such as thermal reﬁned steels of high carbon steel and alloy steel. This double

treatment improves the chipping resistance and have won good reputation.

M1×0.25	0.808	0.785	M2.3×0.4	1.998	1.968
M1.1×0.25	0.918	0.891	M2.3×0.25	2.096	2.071
M1.2×0.25	1.007	0.984	M2.5×0.45	2.162	2.126
M1.4×0.3	1.168	1.142	M2.5×0.35	2.228	2.196	■Depth and hardness of Nitride Surface Treatment	■Comparison between bright and nitride treated
M1.6×0.35	1.332	1.300	M2.6×0.45	2.262	2.226
M1.7×0.35	1.432	1.401	M2.6×0.35	2.318	2.278	■ ■
M1.8×0.35	1.530	1.498	M3×0.5	2.627	2.589		Cutting condition
M2×0.4	1.699	1.669	M3×0.35	2.718	2.677		Tap : Plug tap FC-HT M8×1.25
M2×0.25	1.796	1.771	M4×0.5	3.607	3.561	Treatment A
						Treatment B	Material : GG-25
M2.2×0.45	1.863	1.827	M5×0.5	4.606	4.560	Treatment C

Hole size : 6.8mm Tapping Length : 12mm (through hole) Tapping Speed : 12m/min Cutting oil : Water Soluble cutting oil (×20)

Tapping Machine : CNC tapping machine

S0.5×0.125	0.410	0.396
S0.6×0.15	0.494	0.479
S0.7×0.175	0.575	0.559
S0.8×0.2	0.658	0.640
S0.9×0.225	0.741	0.720	■	■

surface FC-HT design FC-HT

Depth from the surface (Bright) (Nitride treated)

Обший каталог Yamawa 2016 - 2017 - страница 827

Навигация

■Nitriding ■

Обший каталог Yamawa 2016 - 2017 - страница 827

Навигация

■Nitriding ■

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