Atlas Quality Thread Rock Drill Button Mining Bit Matched with Rod

Atlas Quality Thread Rock Drill Button Mining Bit Matched with Rod

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Quick Details

Model Number:	Thread Button Bits
Type:	Drill Bit	Machine Type:	Drilling Tool	Material:	Carbide
Processing Type:	Forging	Use:	Ore Mining	Subject:	Atlas Quality Thread Rock Drill Button Mining Bit Matched with Rod
Color:	Red, Black,Blue,Golden,Silver

Packaging & Delivery

Packaging Detail:	Wooden Box
Delivery Detail:	Within 15 days

Specifications

Thread Rock Drill Button Mining Bit Matched with Rod
1.Diameter:40-200mm
2.Thread:R25,R28,R32,T38,T45,T51

Product Description

Type of Bit:

Head Diameter:	40 mm -200 mm (D)
Bit Type:	Button Bit, Cross Bit
Button Type:	Semispherical Button, Ballistic Button, Conical Button
Thread:	R25, R32, R38, T38, T45, T51(T)
Bit Body:	Standard Skirt, Retrac Skirt
Bit Face:	Flat Face, Concave Face, Convex Face, Drop-Center Face
Material:	High quality tungsten carbide

The selection of Bit Face Type:

Drop center face bit:	It has high penetration rates in soft to medium hard and fissured rock formation, and has better hole deviation control.
Concave face bit:	It’s suitable for medium hard and similar rock formations, it has good hole deviation control and good flushing capacity.
Convex face bit:	It has high penetration rates in soft to medium-hard rock formation. It has the best performance of resistance to steel wash, and reduce the load and wear on the gauge buttons, but it has poor hole deviation control.
Flat face bits:	It’s suitable for hard to very hard and abrasive rock formations.

The selection of Bit skirt:

Standard skirt:	This design is suitable for most of rock formations.
Retrac skirt:	This type design can get better hole deviation control while drilling, it can get bit back easily while the bit is jammed during drilling.

Q:How to improve the surface roughness of casting parts?: One is to improve the accuracy of the model; the two is to improve the molding sand mesh. How much is the other relationship?.

Q:Why do casting parts have air holes?: There are many reasons for casting porosity, mainly due to:1. smelting process is unreasonable, metal liquid absorbs more gas;2. the gas in the mold invades the metal liquid;3. from the mold is more water brush, core dry;4. the casting has poor ventilation;5. ladle tools are not dry.Wait。

Q:How do casting parts remove stress?: Annealing treatment, according to different casting annealing treatment, eliminate thermal stress, if need to restore hardness or increase hardness, and then quenching treatment

Q:What is the ejection angle of the die casting (Tan Gang)?: Because after the wax, wax parts will have a slight contraction, which is good for demoulding. Many moulds don't do the ejection angleEspecially deep hole, and customers to discuss, generally take 0.3-1 degrees is enough

Q:our factory now produces steel castings in the use of polishing directly after spraying processing, but the powder sprayed 15But the spray powder touched off what is the reason we are not very strict requirements not only need to peel off bubbles can also, because our products are steel castings so we use steam hole sludge put on. Do not know if this spray treatment has no effect to thank friends with us!: Steel parts are not familiar. But after spraying, the powder should be divorced from the adhesive force is too low, try to provide the surface roughness of the casting

Q:How to get rid of casting sand inside casting parts?: Are you saying that in the sand casting cavity? We use the manual blast, he is like a pipe will be automatic shot out of the grit, into the casting cavity, to remove the internal cavity in the purpose of casting sand!

Q:The difference between cement sand castings, resin sand castings and vacuum casting parts: The clay wet sand castings casting weight from a few kilograms until tens of kilograms, but the clay dry type of casting production can be weighed dozens of tons.For medium and large castings, cast iron, cast steel can be self hardening sand with resin can be water glass sand production, can obtain the precise size, smooth surface castings, but casting precision, surface roughness, density and microstructure, mechanical properties and material cost of sand casting production is often poor, so when the higher performance requirements of castings, should adopt other casting methods, such as casting (lost wax casting), die casting, low pressure casting.

Q:Why should pig iron be used in casting?: 1, in the absence of special requirements, the most important thing is that the price is cheap.2, pig iron castings quenching process requirements are not high. You can do it by hand.3, pig iron casting hardness is very large, can meet many requirements.4, pig iron castings, high temperature resistance is relatively strong. Like stoves are pig iron castings.5, pig iron casting plasticity is very bad, but in some experiments, but use this weakness to improve the sensitivity of the experiment.Wait

Q:What should I pay attention to when designing a casting structure?: The basic structure of unit 3 in the design of metal casting casting and its parameters are selected, usually should also pay attention to: (1) because of the metal type heat quickly, so the metal type casting minimum wall thickness should be bigger than the sand casting casting casting; (2) the inner wall of the internal ribs and the thickness of a should be connected the outer wall thickness of 0.6 to 0.7, or as the inner wall (rib) cold slowly, cracks in the wall at the junction in the casting shrinkage; (3) to prevent generating white grey cast iron, in addition to taking measures in the process, must make the wall thickness is not too thin (some information that cast fillet at the corner of the wall thickness of 15mm or more, with metal casting casting must be in the corner, for Aluminum Alloy, metal casting magnesium alloy castings shall not be less than 3 ~ 4m; (4) because of the metal type and the core that, for To facilitate the extraction of castings and casting out type, slope casting should be suitably large than sand casting metal casting, the general should be 30% ~ 50%, it should be pointed out that in addition to the height of the slope of casting size and alloy type, wall, is also related to the casting surface position, where the cooling and contraction of the metal type the surface of casting surface can be designed from the tendency of small inclination, while casting shrinkage tend to be pressed on the surface of metal casting type should be given greater inclination.

Q:After reaming, the roughness can reach several levels, that is to say, the sample.Casting parts in rocker arm drilling, reaming, roughness, block. After reaming, the roughness can reach several levels, that is to say, the sample.: Radial drilling machine can achieve boring, reaming function, but as much as you want, according to your requirements and material to determine!

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