Supporting device for welding polycrystalline diamond compacts (PDC) on support
A technology of supporting devices and pillars, applied in auxiliary devices, welding equipment, metal processing equipment, etc., can solve the problems of PDC thermal damage, high welding strength, and high cost, and achieve the goal of reducing thermal damage, improving welding strength, and low production costs Effect
Inactive Publication Date: 2014-05-28
XIAN UNIV OF SCI & TECH
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Problems solved by technology
When using Au-based solder for soldering, its soldering strength is high and it will not cause thermal damage to the PDC, but its cost is too high
The Cu-based solder commonly used in China has high welding strength and low cost, but due to its high melting point, exceeding 800°C, it will cause thermal damage to PDC
Method used
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[0032] Such as figure 1 , figure 2 , image 3 with Figure 4 Shown is a supporting device for welding PDC on a pillar, the pillar 9 includes a pillar body 9-1, and one end of the pillar body 9-1 is provided with a connection surface 9-2 for welding PDC10, the The supporting device includes a base 1, a lifting platform 4 installed on the base 1 and a pillar seat 6 installed on the lifting platform 4, and the pillar seat 6 is provided with a mounting groove for installing a pillar 9, and the pillar seat 6 is close to the connection One end of the surface 9-2 is inclined upward and the connecting surface 9-2 is located on a horizontal plane. Preferably, the angle of upward inclination of the end of the support seat 6 close to the connecting surface 9-2 is 15°. On the base 1 A bracket 8 is installed, and the cooling device 7 for cooling the PDC10 when welding the PDC10 is installed on the bracket 8. The cooling device 7 includes a cooling sleeve 7-1 for being placed on the PDC...
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The invention discloses a supporting device for welding polycrystalline diamond compacts (PDC) on a support. The support comprises a support body, one end of the support body is provided with a connecting face for welding the PDC, and the supporting device comprises a base, a lifting platform arranged on the base and a supporting seat arranged on the lifting platform. The supporting seat is provided with a mounting groove for mounting the support, one end of the supporting seat close to the connecting face inclines upward, the connecting face is arranged on the horizontal plane, and the base is provided with a bracket. The bracket is provided with a cooling device for cooling the PDC during welding of the PDC, the cooling device comprises a cooling sleeve to be sleeved on the PDC, the lateral wall of the cooling sleeve is provided with an annular channel, and the external wall of the cooling sleeve is connected with a water inlet pipe and a water outlet pipe which are communicated with the annular channel. The supporting device can prevent thermal damage on the PDC when the PDC is welded on the support by Cu-based welding materials and is simple in structure and convenient to use and popularize.
Description
technical field [0001] The invention relates to a supporting device, in particular to a supporting device used for welding PDC on a pillar. Background technique [0002] PDC centerless drill bits often use pillar-type PDC as cutting teeth. PDC is a polycrystalline diamond composite sheet. When manufacturing PDC centerless drill bits, PDC is first welded to the pillar to form pillar-type PDC cutting teeth, and then the pillar-type PDC teeth are welded on the bit body. Made of PDC centerless drill bit. Since the PDC on the pillar will undergo secondary soldering, solder with a higher melting point is generally selected as the primary soldering solder. At present, Au-based and Cu-based solders are often used at home and abroad for primary soldering. When Au-based solder is used for soldering, its soldering strength is high and it will not cause thermal damage to the PDC, but its cost is too high. The Cu-based solder commonly used in China has high welding strength and low co...
Claims
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IPC IPC(8): B23K3/08
Inventor 唐胜利周乐韩潇梁英英
Owner XIAN UNIV OF SCI & TECH