桂林卡乐工程钻石科技有限公司

Product Brochure -Dome Inserts

> PCD HAMMER BIT INSERTS
EDT-Diamond dome inserts are two layered engineered products designed for high impact and wear resistant applications such as encountered in percussive drilling for oil and gas.Two layered structures have also found application in three cone rock bits.They are available in sizes suitable for both types of bits.

EDT DOMED INSERTS SPECIFICATION & PRICE LIST

"EDT" Domed inserts Will be available with various diamond grade for the best combination of abrasion and impact resistance:

we have designed our inserts in such a way that because of the transition layers between the diamond layer and the tungsten carbide the thermal integrity and impact strength have vastly improved. ALL OUR LONG PRODUCT IS ONE PIECE (SINGLE PIECE WITHOUT BRAZING)

Domed Inserts Specifications										product-fx			product-f082
Product Code	Size	Φ D	L	dom height	dom R	Φ D	L	DOM HEIGHT	DOM R	PRICE-US$ QUANTITIES			PRICE-US$ QUANTITIES
Product Code	Size	(in)	(in)	(in)	(IN)	(mm)	(mm)	(mm)	(MM)	<300	>500	SAMPLE	<300	>500	SAMPLE
250	1/4"	0.25	0.1950	0.0580	0.1720	6.35	4.95	1.47	5.11	27	25	34	24	23	30
312	5/16"	0.3125	0.2500	0.0750	0.2010	7.94	6.35	1.91	4.24	28	27	35	25	24	32
316	5/16"	0.4395	0.3970	0.1120	0.1670	11.16	10.08	2.84	4.95	28	27	35	25	24	32
375	3/8"	0.375	0.2970	0.0720	0.1950	9.53	7.54	1.83	0.00	32	30	40	29	27	36
379	3/8"	0.379	0.4600	0.1550		9.63	11.68	3.94	5.54	32	30	40	29	27	36
440	7/16"	0.4415	0.5450	0.1870	0.2180	11.21	13.84	4.75	0.00	52	49	65	47	44	59
500	1/2"	0.5015	0.6000	0.3650		12.74	15.24	9.27	0.00	64	61	80	58	55	72
560	9/16"	0.5615	0.8000	0.3650		14.26	20.32	9.27	8.26	72	68	90	65	61	81
630	5/8"	0.6302	0.8000	0.4200	0.3250	16.01	20.32	10.67	0.00	80	76	100	72	68	90
690	11/16"	0.6920	0.8000	0.4550		17.58	20.32	11.56	9.86	93	88	116	84	79	105
7506	3/4"	0.7480	0.6000	0.3650	0.3880	19.00	15.24	9.27	9.93	99	94	124	89	85	111
7500	3/4"	0.7515	0.9000	0.3650	0.3910	19.09	22.86	9.27	0.00	109	104	136	98	94	123
7535	3/4"	0.7535	0.9000	0.3650		19.14	22.86	9.27	10.08	109	104	136	98	94	123
750125	3/4"	0.7526	1.1250	0.3650	0.3970	19.12	28.58	9.27	10.67	120	111	150	108	100	135
8150	13/15"	0.8145	0.9000	0.3130	0.4200	20.69	22.86	7.95	11.30	135	124	169	122	112	152
8750	7/8"	0.8770	0.9000	0.3700	0.4450	22.28	22.86	9.40	0.00	150	143	188	135	129	169
8770	7/8"	0.8790	0.9000	0.3700		22.33	22.86	9.40	11.30	150	143	188	135	129	169
875125	7/8"	0.8770	1.1250	0.3700	0.4450	22.28	28.58	9.40	13.34	165	155	206	149	140	186
10000	1"	1.0015	1.0000	0.3680	0.5250	25.44	25.40	9.35	0.00	180	171	225	162	154	203
100125	1"	1.0015	1.1250	0.3680		25.44	28.58	9.35	0.00	200	190	250	180	171	225

	Tolerances: D =±0.0005'' D =±0.013.MM COMMERCIAL D =±0.0003'' D =±0.008.MM PREMIUM D =±0.0002'' D =±0.005.MM PREMIUM L=±0.002'' L =±0.051.MM DOM HIGHT =±0.01'' DOM HIGHT =±0.254.MM NOTE: The Diameter, Length and the Carbide Chamfer Machined to Customer Specifications.
The Diameter, Length and the Carbide Chamfer Machined to Customer Specifications.
Tolerance:D +/-.0003, L +/-.002.Products can be finished ground to meet customer’s OD and length specifications. Our 3/4 inch, and 7/8 inch dome inserts have found successful application in geographical locations ranging from West and East Texas, New Mexico, Oklahoma, Arkansas, WV and NEUS regions. Inserts are evaluated for their metallurgical features by microscopic examination of the section.Following micrographs show 1) the working layer integrity 2) the bonding between the working layer and the transition layer and 3) the interface integrity between transition layer and the carbide substrate.As can be seen in the following micrographs, the layers are homogenous and well bonded.

> LAYER THICKNESS
EDT-Diamond Hammer bit inserts are characterized by highest thickness of first layer than found in any competitive product in the market place.Typical thickness for the first layer is in excess of .045 inch and transition layer of .030 inch.

Photograph shows half cut view of both 3/4 inch insert (left) and 7/8 inch insert (right).Transition layer and first layer can be seen with layer thicknesses marked.

EDM section of both 3/4 inch and 7/8 inch insert

MICROGRAPH OF CUTTING STRUCTURE
Scanning electron micrograph of outer working layer.The layer is more than 90% by volume diamond followed by a specially engineered transition layer that intimately bonds with the carbide substrate as shown below.

TRANSITION LAYER/ CARBIDE SUBSTRATE INTERFACE


QUALITY CONTROL AND IMPACT TESTING Inserts are manufactured under strict guideline where all high pressure and high temperature components, raw materials for inserts are regulated.All batches of inserts are checked for the following: Dye penetration to check presence of cracks Thermal stability test Drop Weight Test and Impact Fatigue where inserts are subjected to impact at a rate of 20 hits per minute using a 5 Ton machine.


Photograph of the drop weight test machine	Insert in a holder