Общий каталог Yamawa 2022 - 2023 - страница 1209

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Bar diameter of external threads (for thread rolling dies)Bar diameter of external threads (for thread rolling dies) Surface TreatmentSurface Treatment

○○NRS-D recommendation for bar diameter NRS-D recommendation for bar diameter The best surface treatment is applied to each tap depending on the tapping purpose.The best surface treatment is applied to each tap depending on the tapping purpose.

for metric external threadsfor metric external threads

Unit : mmUnit : mm Characteristics and effectiveness of surface treatment are introduced at next section.Characteristics and effectiveness of surface treatment are introduced at next section. recommended bar diameterrecommended bar diameter sizesize ■■OxidizingOxidizing MaxMax MinMin

M3M3××0.50.52.642.642.622.62○○This treatment was processed by using HOMO furnace being made by LEED AND NORTHUP company USA in 1938, and it is called HOMO treatment. This treatment was processed by using HOMO furnace being made by LEED AND NORTHUP company USA in 1938, and it is called HOMO treatment.
M4M4××0.70.73.543.543.523.52This treatment is also called vapor treatment and steam treatment. Through this treatment, FeThis treatment is also called vapor treatment and steam treatment. Through this treatment, Fe OO layer of blue black color is produced over the tool layer of blue black color is produced over the tool
33 44
M5M5××0.80.84.404.404.384.38surface.surface.
M6M6××115.305.305.285.28○○Oxidization treatment produces porous layer on tool's surface. This porous layer works as oil pocket to reduce friction, to avoid welding and to Oxidization treatment produces porous layer on tool's surface. This porous layer works as oil pocket to reduce friction, to avoid welding and to
M8M8××1.251.257.107.107.077.07improve the surface roughness of internal screw. Moreover, longer tool life is expected because the treatment reduces the remaining stress of HSS improve the surface roughness of internal screw. Moreover, longer tool life is expected because the treatment reduces the remaining stress of HSS

tools.tools. ○○This treatment does not increase the hardness on tool surface. Using the furnace of YAMAWA original design and choosing the proper treatment This treatment does not increase the hardness on tool surface. Using the furnace of YAMAWA original design and choosing the proper treatment ○○RS-D recommendation for bar diameter for metric external threadsRS-D recommendation for bar diameter for metric external threads time, we have marked good result of oxidizing for YAMAWA HSS tools.time, we have marked good result of oxidizing for YAMAWA HSS tools. Unit : mmUnit : mm ○○Stainless steel and low carbon steel are the materials that are easy to get welding. We are applying this treatment to the special purpose taps for Stainless steel and low carbon steel are the materials that are easy to get welding. We are applying this treatment to the special purpose taps for

recommended bar diameterrecommended bar diameter recommended bar diameterrecommended bar diameter

sizesize sizesize these materials to get good result. Further due to the reduction of friction force, this treatment has good result for wide range of steel type material.these materials to get good result. Further due to the reduction of friction force, this treatment has good result for wide range of steel type material.

MaxMaxMinMinMaxMaxMinMin
M1M1××0.250.250.8080.8080.7850.785M2.3M2.3××0.40.41.9981.9981.9681.968○○We combine oxidizing with nitriding for the taps designed for thermal refined steels of high carbon steels and alloy steels. This double treatment We combine oxidizing with nitriding for the taps designed for thermal refined steels of high carbon steels and alloy steels. This double treatment
M1.1M1.1××0.250.250.9180.9180.8910.891M2.3M2.3××0.250.252.0962.0962.0712.071wins good reputation of the market.wins good reputation of the market.
M1.2M1.2××0.250.251.0071.0070.9840.984M2.5M2.5××0.450.452.1622.1622.1262.126
M1.4M1.4××0.30.31.1681.1681.1421.142M2.5M2.5××0.350.352.2282.2282.1962.196
M1.6M1.6××0.350.351.3321.3321.3001.300M2.6M2.6××0.450.452.2622.2622.2262.226
M1.7M1.7××0.350.351.4321.4321.4011.401M2.6M2.6××0.350.352.3182.3182.2782.278■■Comparison between bright and oxide treatedComparison between bright and oxide treated ■■Thickness of oxide layer and the time of treatmentThickness of oxide layer and the time of treatment
M1.8M1.8××0.350.351.5301.5301.4981.498M3M3××0.50.52.6272.6272.5892.589
M2M2××0.40.41.6991.6991.6691.669M3M3××0.350.352.7182.7182.6772.677
M2M2××0.250.251.7961.7961.7711.771M4M4××0.50.53.6073.6073.5613.561
Cutting conditionCutting condition
M2.2M2.2××0.450.451.8631.8631.8271.827M5M5××0.50.54.6064.6064.5604.560

Tap : SU-SP/M8×1.25/P2 Tap : SU-SP/M8×1.25/P2 ○○MS-RS-D recommendation for bar diameter MS-RS-D recommendation for bar diameter Material : SUS304 (165~171HB) Material : SUS304 (165~171HB) for miniature external threadsfor miniature external threads Unit : mmUnit : mm Hole size : Hole size : φφ6.8mm6.8mm

recommended bar diameterrecommended bar diameter sizesize Tapping Length : 12mm (through hole) Tapping Length : 12mm (through hole) MaxMax MinMin

S0.5S0.5××0.1250.1250.4100.4100.3960.396
Tapping Speed : 7.2m/min Tapping Speed : 7.2m/min
S0.6S0.6××0.150.150.4940.4940.4790.479
S0.7S0.7××0.1750.1750.5750.5750.5590.559Cutting oil : Insoluble oil Cutting oil : Insoluble oil
S0.8S0.8××0.20.20.6580.6580.6400.640Tapping Machine : CNC tapping machineTapping Machine : CNC tapping machine
S0.9S0.9××0.2250.2250.7410.7410.7200.720

SU-SP designSU-SP design SU-SPSU-SP

(minute)(minute) (Bright) (Bright) (Oxide treated)(Oxide treated)

Treatment timeTreatment time

Technical Inf