Warranty Period: 3 Years
Support Customization: Oem, Odm
Species: Twist Drill Bit
Application: Metal Drilling
Surface Treatment: Other
Productivity: 100, 000PCS Per Month
Transportation: Ocean,Land,Air,Express
Supply Ability: 100, 000PCS Per Month
Certificate: RoHS, CE, UL, BS, CCC, GS, Many
Payment Type: L/C
Processing impact editing (1) The diameter of Twist Drill is limited by the aperture, the spiral groove makes the drill core thinner, the Drill Bit stiffness is low; With only two ribbed guides, the axis of the hole is easy to skew; The horizontal edge makes centering difficult, axial resistance increases, and the bit is easy to swing. Therefore, the shape and position error of the drilled hole is large. (2) Twist drill before and after the Tool surface are curved, along the main cutting edge of each point of the front Angle, the rear Angle is not the same, the front Angle of the horizontal edge of -55°. Poor cutting conditions; The distribution of cutting speed along the cutting edge is not reasonable, and the cutting speed of the tip with the lowest strength is the highest, so the wear is serious. Therefore, the hole precision of processing is low. (3) The whole edge of the main cutting edge of the drill participates in cutting, and the cutting speed of each point on the edge is not equal, which is easy to form spiral chips and difficult to discharge chips. Therefore, the chip and the hole wall extrusion friction, often scratch the hole wall, the surface roughness after processing is very low.
Model NO. GMSD367
| Material | Component (%) |
| HSS 4241 | C (0.9~1.0); Si(1.0~1.3); Mn(0.25~0.4); P(0~0.035); S(0~0.009); Cr(3.8~4.2); Mo(0.55~0.85); W(1.6~2.0); V (0.4~0.65); Co(0) |
| HSS 4341 | C (0.83~0.93); Si(0.2~0.4); Mn(0.2~0.4); P(0~0.03); S(0~0.009); Cr(3.8~4.4); Mo(2.5~3.5); W(3.5~4.5); V (1.2~1.8); Co(0) |
| HSS 6542 (M2) | C (0.8~0.9); Si(0.2~0.45); Mn(0.15~0.4); P(0~0.03); S(0~0.009); Cr(3.8~4.4); Mo(4.6~4.9); W(5.6~5.9); V(1.8~2.0); Co(0) |
| HSS 9341 | C (0.77~0.87); Si(0.2~0.4); Mn(0.2~0.4); P(0~0.03); S(0~0.009); Cr(3.8~4.4); Mo(2.7~3.3); W(8.5~9.5); V(1.3~1.7); Co(0) |
| HSS M35 (Co5%) | C (0.8~0.9); Si(0.2~0.45); Mn(0.15~0.4); P(0~0.03); S(0~0.009); Cr(3.8~4.4); Mo(4.6~4.9); W(5.6~5.9);V(1.8~2.0); Co(4.6~4.9 |
Q&A:
1.Are you manufacturer? Do you have factory?
We are Professional manufacturer ,we have more than 5 years experience in this field.
2.Does free shipping is possible?
We don't offer free shipping service, but we will give you some discount if you buy large quantity products.
3.Can you send products to our Forwarder in China?
Yes, if you have forwarder in China, i will glad to send products to him/her.
4.Do you make OEM?
Yes, we do. We have laser machine, can laser your logo and sizes on the body of milling cutter, also can print labels.
5.How about the delivery time?
According to the sizes and quantity, delivery time is different. Usually be 5~10 days. We can tell you exact inventory state if you need.
6.Can you produce carbide Special Tool ?
Yes We can. From 2013 year. Our factory main market is from standard end mills to special tools. Special tool according your drawing and sample.
Product Categories : Drill Bit > Step Dril Bit
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