Diamond PDC core bit for drilling in China GD

Specifications and Product Details:

The hard alloy drill gun represents the advanced and highly-efficient hole processing technology. The product combines the process of drilling, boring and broaching in one step, making holes of high accuracy(IT6-8 level), precise straightness(0.16-0.33mm/1000mm) and low toughness in one time feeding(Ra3.2-Ra0.1). The drilling speed can reach 30-100meter/minute or above. The hard alloy drill gun (depth drill) is an ideal hole finishing tool with its head adopting the entire hard alloy or empiecement structure, featuring high durability and high precision. With the dimensional precision of the processed hole being up to H7, and good straightness<0.1/1000mm, roundness≤0.005mm and surface roughness≤Ra0.8um, the product has been extensively applied in industries such as the machine tool, automobiles, aviation, motor locomotive, chemical machinery, oil nozzles and pumps, mining machinery, hydraulic parts, etc. Bangyu series drill guns can be used on the equipment which meets the requirements for drill gun cooling and direction guiding such as the special deep-hole processing machine, processing center, turning center, etc. and can be used for the processing of carbon steel, stainless steel, cast iron, non-ferrous metal, as well as wood and plastics. Bangyu company will provide customers with the optimized cutting technology parameters according to their machine tool conditions to ensure the best cutting performance of drill guns. To ensure drill guns' long-term, smooth and reliable working performance, the company supplies with the drill gun the integrated rough/finishing diamond grinding12A2/45° wheels which will enable the rough grinding and finishing grinding to be achieved by one time loading of the drill gun so as to greatly improve the efficiency and quality of the grinding process. We ensure the processing property and quality of the grinded drill guns close to that of new ones. We ensure the smooth drilling of drill guns.

Table on Drilling Parameter of Gun Drill Machine
ISO	Material		Special cutting force N/ mm²	Brinell hardness HB	Cutting speed V,m/min	Diameter of drill, mm
						0.98-3.00	3.00-6.30	6.00-12.50	12.50-40.50
						Feed rate, mm/r
P steel	Un-alloyed	Non-quenched0.1-0.25‰	2000	90-200	60-120	0.003-0.010	0.005-0.030	0.015-0.055	0.020-0.110
		Non-quenched0.25-0.55‰	2100		50-120	0.003-0.010	0.005-0.030	0.015-0.055	0.020-0.110
		Non-quenched0.55-0.80‰	2180	150-250	40-100	0.003-0.010	0.004-0.025	0.010-0.050	0.020-0.100
	Low alloy	Non-quenched	2100	150-260	40-120	0.003-0.010	0.004-0.030	0.010-0.055	0.020-0.110
	Low alloy	Quenching and tempering	2775	220-450	40-120	0.003-0.010	0.004-0.025	0.010-0.050	0.020-0.100
	High alloy	Annealing	2500	150-250	40-100	0.003-0.010	0.004-0.025	0.010-0.050	0.020-0.100
	High alloy	Quenching tool steel	3750	250-350	50-100	0.003-0.010	0.005-0.025	0.015-0.050	0.030-0.100
	High cast steel	Un-alloyed	1800	90-225	50-120	0.003-0.010	0.005-0.030	0.015-0.055	0.020-0.110
	High cast steel	Low alloy(alloying element<5%)	2100	150-250	40-100	0.003-0.010	0.004-0.025	0.010-0.050	0.020-0.100
Stainless steel	Tracked/forged	Ferrite and martensite	2300	150-270	40-90	0.003-0.008	0.004-0.025	0.010-0.040	0.020-0.100
	Tracked/forged	Non-quenched	2300	150-270	40-90	0.003-0.008	0.004-0.025	0.010-0.040	0.020-0.100
	Tracked/forged	Austenite	2600	150-275	40-90	0.003-0.008	0.004-0.025	0.010-0.040	0.020-0.100

K cast iron	Malleable cast iron	Ferrite	950	110-145	70-90	0.005-0.010	0.008-0.030	0.020-0.070	0.050-0.190
	Malleable cast iron	Pearlite	1100	150-270	60-90	0.004-0.010	0.006-0.030	0.010-0.070	0.030-0.790
	Grey cast iron	Low tensile strength,	1100	150-220	60-90	0.004-0.010	0.006-0.030	0.010-0.070	0.030-0.190
	Grey cast iron	High tensile strength	1290	200-330	15-90	0.003-0.010	0.003-0.030	0.005-0.070	0.010-0.190
	Ductile cast iron	Ferrite	1050	125-230	70-90	0.005-0.010	0.006-0.030	0.020-0.070	0.050-0.190
	Ductile cast iron	Pearlite	1750	200-300	60-90	0.004-0.010	0.006-0.030	0.010-0.070	0.030-0.190
N non-ferrous metal	Alloy	Casting, non aging	750	40-100	65-300	0.005-0.015	0.005-0.030	0.020-0.070	0.030-0.150
	Steel and steel alloy	Free-cutting alloy pb>1%	700	70-160	65-300	0.005-0.015	0.005-0.040	0.020-0.070	0.030-0.150
	Steel and steel alloy	Copper, leaded bronze pb≤1%	700	50-200	65-300	0.005-0.015	0.006-0.040	0.020-0.070	0.030-0.150