HSS-CO cobalt drill bit, Straight shank twist drill,specially used in stainless steel processing
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 pc
- Supply Capability:
- 100000 pc/month
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Specifications
1. Offers a complete line of Metal Twist Drill Bits, such as straight shank, taper shank, etc;
2. Process: fully ground;
Dimensions
1. Drill diameter - The values indicated in the relevant dimensional standards apply in respect of the diameter of twist drills.
•Test point: On the lands at the corners
•Testing equipment: micrometer
2. Tapering of diameter - The diameter of twist drills usually reduces from the drill tip towards the shank in the area of the flutes.
•Test values: The taper on diameter amounts to 0.02 to 0.08mm over a length of 100mm.
•Test point: At the outside diameter on the land.
•Testing equipment: micrometer and indicating measuring instruments.
3. Parallel shank - Tolerance for shank diameter f11, Tolerance for roundness and parallelism 0.02mm for the shank length.
4. Length - The tolerance of length for the total length corresponds for the degree of accuracy "very coarse" according to DIN standards. The flute lengths given in the relevant dimensional stands are minimum dimensions.
5. Point angle
•Test value: σ=118°; σ=135°
•Test point: At the cutting edges
•Testing equipment: Universal bevel protractor indicating measuring instruments.
Materials and hardness
•Materials - M2, M35, M42, 9341, 4341, 4241, etc
•Hardness - HSS HRC63-66; HSSCo HRC64-68
•Test point: On outside diameter on the land or adjacent relieved land.
•Test equipment: Hardness Tester.
Marking
Twist drills with diameter 3mm and upwards shall be marked with:
1.Diameter;
2.Material: (HSS, HSSCo);
3.Additional and/or differing marking by agreement.
- Q: What are the commonly used hardware materials? What are their respective properties?
- Hardware is a kind of building materials industry, including construction hardware, mechanical hardware, spraying equipment, kitchen facilities, bathroom facilities and hardware fittings.The traditional hardware refers to hardware, refers to iron, steel, aluminum and other metal, through forging, calendering, cutting, and so on physical processing made from various metal devices. There are many kinds of hardware products, and the specifications are not the same. They occupy an important position in furniture decoration.Big hardware includes steel plate, steel, flat iron, steel bar, universal channel iron, I-iron and various types of hardware, building hardware, tin, lock nails, wire, steel wire, steel wire cutting, home hardware, tools etc.. On the nature and use of hardware, iron and steel materials, non ferrous metal materials, machinery parts, transmission equipment, auxiliary tools, working tools, construction hardware, household hardware and other eight categories are to be considered.
- Q: How to buy some ardware
- Beware of stainless steel change "stainless iron""Some people reflect that in the purchase of stainless steel parts products, found that some stainless steel, that is, in stainless steel materials doped a lot of iron ingredients, the price difference of nearly two times. The towel rack for example, stainless steel for the average price of 200 yuan each, while the stainless iron price is only 70 yuan each, on the surface of the two are basically the same, but the surface brightness of stainless steel, stainless iron is used for a long time, easy to rust surface blackening.
- Q: Hardware stamping materials, know to tell me, the more species, the better, thank you ~!
- Steel, steel, alloy, stainless steel, brass, aluminium, zinc, copper and ironSome other good plastic alloys can also be used as hardware stamping materials
- Q: What kind of goods do you need to open a hardware store?
- Most of the hardware stores include: ordinary light bulbs, energy-saving light bulbs, switches, sockets, wires, safety switches, taps, sandpaper, brushes, and economical coatings.
- Q: What does hardware mean? Big brother, give me a detailed explanation
- The widget is made with five kinds of raw materials of metal hardware store to you to see there is to buy the hardware
- Q: How do housekeeping refer to hardware accessories with good or bad?
- Imported hinge due to material requirements, the general weight of domestic hinge than 20% to 30%, the surface plating smooth and delicate. Besides, the edge of the hinge spring plate is processed smoothly and orderly, and the high quality hinge is additionally provided with nylon protector. The edge of many spring hinges made in China is not polished and has burrs.
- Q: What is the rebate rate for hardware?
- You this question is general Oh, specifically to see the screw material (steel, copper) and use, in order to determine its tax rebate rate, 5% is yes.
- Q: Want to know the function and choice of cabinet hardware parts
- Functional cabinet hardware refers to hardware parts used to achieve certain functions, such as connectors such as hinges and drawer slides. Among them, the hinge to withstand the test of time, it must not only convergence door cabinet, but also alone bear the weight of the door; another drawer slide can not be ignored, it is first placed in all the weight of the drawer, drawer slide drawer pull not only high-quality, laborious. Therefore, the choice of these hardware fittings must be of good quality.Buy functional hardware accessories, first, to carefully observe whether the appearance of rough, then his hands sliding switch test several times to see if the comfort, whether there is abnormal sound, do not compare with the furniture hardware, but compared with the similar products, once again to see the material, the material used is relatively good, choose as far as possible long operating history, high-profile manufacturers.
- Q: What does "R0.5max" mean in hardware drawing?
- The maximum chamfer diameter is 0.5; the general unit is MM, MIN: minimum MAX: maximum
- Q: Hardware should be how to buy?
- See matching. Bathroom three large sanitary ware in the bathroom occupies the largest position, therefore, can not let sanitary ware to match hardware fittings, but let hardware fittings and sanitary ware match. In the purchase of bathroom hardware accessories, we must consider whether these accessories and purchased sanitary ware match. There are a variety of hardware accessories market, consumers in the choice should pay attention to color, materials and models is consistent with the overall style of the decoration bathroom, if only their own love, it is likely to last pick parts placed in the bathroom will be awkward.
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HSS-CO cobalt drill bit, Straight shank twist drill,specially used in stainless steel processing
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 pc
- Supply Capability:
- 100000 pc/month
OKorder Service Pledge
OKorder Financial Service
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