R38 Tungsten Carbide Drill Bit with Ballistic Button for Mining

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Quick Details

Model Number:	B964-R38-B to B1389-R38-B-2
Type:	H-thread Button Bit	Material:	Tungsten Carbide	Use:	Coal Mining

Packaging & Delivery

Packaging Detail:	Carton or Wooden Box
Delivery Detail:	20-25

Specifications

High grade tungsten carbide inserts
Bit bodies manufactured from high grade steel and processed using state-of-the-art CN

Product Description

R38 Tungsten Carbide Drill Bit with Ballistic Button for Mining

Description

This type of bit is well known for its wear resistance and high speed drilling on soft to medium-hard rock formations (between 70 Mpa to 180 Mpa compressive strength). Featuring ballistic tungsten carbide inserts that is known to have high penetration rate, but has weak configuration against carbide fracture.

• Widely used drifting and tunneling
• Bit face design is ideal for medium-hard to hard abrasive rock

Color: Green or Based on Customer requirements

Material: Tungsten carbide and high strength alloy steel

Processing: CNC milling and proprietary heat treatment process

Type: R38 Button Bit Ballistic Buttons

Applications

• Underground mining
• Tunneling

Competitive Advantage

• High grade tungsten carbide inserts
• Bit bodies manufactured from high grade steel and processed using state-of-the-art CNC machinery and heat treatment

Part Number	Product Code and Brief Description	Bit Diameter (mm)	Bit Diameter (inch)	Front Buttons (No. x mm)	Gauge Buttons (No. x mm)	Angle	Front Flushing Holes	Side Flushing Holes	Weight (kg)
4148300657	B964-R38-B, R38 Button Bit, Ballistic Buttons	64	2 1/2	3x11	6x12	35°	3	-	1.8
4148300658	B1270-R38-B, R38 Button Bit, Ballistic Buttons	70	2 3/4	4x11	8x11	40°	2	-	1.9
4148300659	B1370-R38-B, R38 Button Bit, Ballistic Buttons	70	2 3/4	4x10, 1x10	8x11	30°	4	-	1.9
4148300660	B1276-R38-B, R38 Button Bit, Ballistic Buttons	76	3	4x11	8x11	40°	2	-	2.4
4148300661	B1076-R38-B, R38 Button Bit, Ballistic Buttons	76	3	3x11, 1x11	6x12	35°	3	1	2.6
4148300662	B1376-R38-B, R38 Button Bit, Ballistic Buttons	76	3	4x11, 1x11	8x12	35°	4	-	2.6
4148300663	B1389-R38-B-1, R38 Button Bit, Ballistic Buttons	89	3 1/2	5x12	8x12	35°	2	-	3.3
4148300664	B1389-R38-B-2, R38 Button Bit, Ballistic Buttons	89	3 1/2	4x13, 1x13	8x13	35°	4	-	3.3

Q: What are the casting parts used to test shrinkage holes?: 3 fluorescent magnetic powder, this method can also be found in part.

Q: How to calculate the price of casting parts?: According to the complexity of the workpiece, material and casting requirements and process yield

Q: What's the effect of casting copper?: In general cast iron, the mass fraction of copper below 3% - 3.5% can increase the hardness; but when the cast iron has a tendency to chill, or when there is a hard point of free carbides, the addition of copper decreases the hardness.Copper can be used to improve the wear resistance, abrasion resistance, and shock absorption of cast iron, so it is often used in the manufacture of sliding friction iron castings, such as drilling machine spindle, automobile and tractor, valve tappet, etc.. But in white cast iron or chilled cast iron, adding copper does not make any improvement in its abrasion resistance.Copper for certain heat resistant cast iron and austenitic cast iron can increase the heat resistance and corrosion resistance, copper - chromium composite alloy to prevent oxidation under high temperature in the atmosphere from the skin effect is particularly effective, heat resistance and corrosion resistance of austenitic cast iron containing many mass fraction of 4% ~ 7% copper.

Q: Domestic large steel castings factory which is better, recommend!: Do the casting manufacturer of large steel castings, Hunan Jinsha heavy industry science and technology limited company, heard that their professional only more than 1 tons of steel castings, anyway, 150T just big, the company won a lot of foundry industry patents should be good. At least spend money on research and development, then the quality should be all right.

Q: Selection of hydraulic press is the casting parts and steel plate welding, how to choose?: Casting parts in one shape, the overall processing in this regard than steel plate welding better. The same price is much more expensive than steel. Large hydraulic presses seldom have casting parts.

Q: In theory, which is more expensive, forging parts or casting parts?: It depends on the structure. In theory, the shape of the forging is relatively simple, but the requirement of internal structure is relatively high

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.: The finish of reaming depends on the material and the sharpness of the reamer, as well as the speed and speed of the top and bottom. Marine machine tool

Q: Why should pig iron be used in casting?: Not necessarily is iron, steel, stainless steel, aluminum, copper can be cast iron, is cheaper, and better properties of cast out, for example, is not easy to rust, high strength, easy processing and so on, and is the only iron iron cast out, it is not necessarily the raw pig iron, plus some other material

Q: What foundry factories are used in the casting parts of China's major automobile manufacturers?: For example Changchun FAW, under a casting, two casting and other casting plant, but there are more than half of all outsourcing in Tianjin Hebei Shandong purchase, many automobile enterprises to casting foundry.

Q: ZGMn13 casting parts processing, with what knife head good?: The ZGMn13 itself is not have processing, if only the processing point, sharpening, ordinary can, if the processing area is relatively large, ZGMn13 external impact load is bigger, its surface wear resistance is high; the two is with the gradual wear of surface hardening, the hardening layer is continuously formed new if you have suggestions, processing, plasma cutting or flame cutting try

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