A kind of welding method of hard alloy cutting tool
(1) technical field
A kind of welding method of hard alloy cutting tool relates to during a kind of mechanical turning cutting tool makes, the method that carbide alloy is connected with the tool steel soldering.
(2) background technology
In mechanical turning cutting tool manufacture process, consider the reason of cost and processing, the small size carbide filler that will be used to cut usually is welded in steel material matrix.In actual mechanical process, because carbide alloy and the difference of matrix steel on material property, (carbide alloy is about 6 * 10 very big difference especially on thermal coefficient of expansion
-6, steel are 12 * 10
-6); after adopting money base or copper base solder soldering, can produce very big stress, usually can cause that cutter soldering cooling back carbide alloy cracks, flake and fragment phenomenon; the yield rate that causes hard alloy cutter to produce is low, has also influenced the quality and the service life of cutter.
(3) summary of the invention
The objective of the invention is the deficiency that exists in the above-mentioned technology, provide a kind of can effectively reduce hard alloy cutter produce in flake and fragment phenomenon after the soldering, improve yield rate and cutter quality that cutter is produced, prolong the welding method of a kind of hard alloy cutter of cutter life.
The objective of the invention is to be achieved through the following technical solutions.
A kind of welding method of hard alloy cutting tool, adopt money base or copper parent metal to make the cored solder brazed shank tool, when it is characterized in that soldering, therebetween the scolder soldering as on the soft red copper of transition plate is connected by being inserted at carbide alloy and base steel storeroom, its welding manner is that carbide alloy is connected with the soldering of soft copper sheet by the scolder of close attachment on the copper sheet one side, and steel substrate is connected with the another side soldering of red copper by the scolder of close attachment on the copper sheet another side.
A kind of welding method of hard alloy cutting tool, the thickness that it is characterized in that the copper sheet that inserts is 2 times of the used solder thickness of welding.
A kind of welding method of hard alloy cutting tool, the process that it is characterized in that the cored solder close attachment of copper sheet is to explode money base or copper base brazing tablet and copper sheet single face compound, the face blast is compound in addition with money base or copper base brazing tablet and copper sheet again, the thickness ratio that obtains cored solder and copper sheet on the copper sheet upper and lower surface of compound back is 1: 2: 1 a blank, blank is carried out reconditioning, clean, annealing, rolling, annealing in process, annealing temperature is 450 ℃-550 ℃, be incubated 40 minutes-60 minutes, rolling total working modulus is 65%-75%, obtains the copper sheet soldering tablet of close attachment cored solder.
A kind of welding method of hard alloy cutting tool is characterized in that used money base soldering tablet is the AgCuZnCd solder sheet, and its composition is that Cu12%-18%, Zn12%-18%, Cd16%-22%, surplus are Ag and unavoidable impurities.
A kind of welding method of hard alloy cutting tool is characterized in that used copper base brazing tablet is the CuZnMn solder sheet, and its composition is that Zn35%-40%, Mn2%-5% surplus are Cu and unavoidable impurities.
The welding method of a kind of hard alloy cutter of the present invention, the carbide alloy of cutter is to weld in the cored solder of copper sheet by close attachment, the thermal stress that the welding back produces is absorbed by the copper sheet compensation effectively, effectively reduce hard alloy cutter produce in flake and fragment phenomenon after the soldering, improve yield rate and cutter quality that cutter is produced, prolong cutter life.
The copper sheet soldering tablet of the cored solder of the close attachment of method preparation of the present invention can effectively guarantee welding reliability, has also simplified operation easier widely.
(4) specific embodiment
A kind of welding method of hard alloy cutting tool, adopt money base or copper parent metal to make the cored solder brazed shank tool, during soldering, scolder soldering on the soft red copper transition plate therebetween is connected by being inserted at carbide alloy and base steel storeroom, to be carbide alloy be connected with the soldering of soft copper sheet by the scolder of close attachment on the copper sheet one side its welding manner, and steel substrate is connected by the soldering of close attachment on the another side of the scolder on the copper sheet another side and red copper.The process of the cored solder close attachment of copper sheet is to explode money base or copper base brazing tablet and copper sheet single face compound, the face blast is compound in addition with money base or copper base brazing tablet and copper sheet again, the thickness ratio that obtains cored solder and copper sheet on the copper sheet upper and lower surface of compound back is 1: 2: 1 a blank, blank is carried out reconditioning, cleaning, annealing, rolling, annealing in process, annealing temperature is 450 ℃-550 ℃, be incubated 40-60 minute, rolling total working modulus is 65%-75%, obtains the copper sheet soldering tablet of the cored solder of the suitable close attachment of thickness.Used money base soldering tablet is the AgCuZnCd solder sheet, and its composition is that Cu12%-18%, Zn12%-18%, Cd16%-22%, surplus are Ag and unavoidable impurities.Used copper base brazing tablet is the CuZnMn solder sheet, and its composition is that Zn35%-40%, Mn2%-5% surplus are Cu and unavoidable impurities.
Embodiment 1
Embodiment for the process of carbide alloy and drill rod weldering.At first clean up the soldered surface that steel matrix and hard close.Adopt the lap joint pattern, dispose the solder sheet that the red copper of Ag base solder coating is arranged into one deck pricker at steel and carbide alloy plumb joint, and at solder sheet and the unilateral one deck brazing flux of coating of matrix welding, the control joint clearance of brazing is 0.05mm, fix with anchor clamps, and make joint be in pressured state.Adopt the gas brazing welding point then,, fill up the gap, stop heating then, and in air, be cooled to till the normal temperature when the solder fusing flows into brazed seam.The heels of removing then on the weldment is finished welding, and the hard of welding closes the cutter firm welding.
Embodiment 2
Embodiment for the process of carbide alloy and drill rod weldering.At first clean up the soldered surface that steel matrix and hard close.Adopt the lap joint pattern, dispose the solder sheet that the red copper of Cu base solder coating is arranged into one deck pricker at steel and carbide alloy plumb joint, and at solder sheet and the unilateral one deck brazing flux of coating of matrix welding, the control joint clearance of brazing is 0.13mm, fix with anchor clamps, and make joint be in pressured state.Adopt the gas brazing welding point then,, fill up the gap, stop heating then, and in air, be cooled to till the normal temperature when the solder fusing flows into brazed seam.The heels that cleans then on the weldment is finished welding, and the hard of welding closes the cutter firm welding.
Embodiment 3
The copper sheet soldering tablet of the cored solder of preparation close attachment.
Selecting thickness is the 3.0mm copper plate, the AgAuCd alloy sheets that 1.5mm is thick, the planar dimension of copper plate than AgCuZnCd alloy sheets greatly 10mm to improve the utilization rate of precious metal material.Adopt explosion cladding process, the AgCuZnCd alloy sheets is carried out reconditioning, cleaning.Compound AgCuZnCd/Cu=1 at first explodes AgCuZnCd and Cu single face: 2, again to the finishing of AgCuZnCd/Cu double layer composite board plate level, the reconditioning of Cu face is cleaned, and the blast of carrying out AgCuZnCd/Cu and AgCuZnCd again is compound, compound back AgCuZnCd/Cu/AgCuZnCd=1: 2: 1.Then the three-layer composite board material is carried out reconditioning, cleans the after annealing processing, carry out repeatedly rolling again and annealing, the control process conditions are 450 ℃-550 ℃, are incubated 40 minutes-60 minutes, total working modulus is 65%-75% between annealing, obtains preparing the copper sheet soldering tablet of the cored solder of close attachment.
Embodiment 4
The copper sheet soldering tablet of the cored solder of preparation close attachment.
Selecting thickness is the 3.0mm copper plate, the AgAuCd alloy sheets that 1.5mm is thick, the planar dimension of copper plate than CuZnMn alloy sheets greatly 10mm to improve the utilization rate of precious metal material.Adopt explosion cladding process, the CuZnMn alloy sheets is carried out reconditioning, cleaning.At first with CuZnMn and Cu single face blast composite Cu ZnZn/Cu=1: 2, again to the finishing of CuZnMn/Cu double layer composite board plate level, the reconditioning of Cu face is cleaned, and the blast of carrying out AgCuZnCd/Cu and CuZnMn again is compound, compound back CuZnMn/Cu/CuZnMn=1: 2: 1.Then the three-layer composite board material is carried out reconditioning, cleans the after annealing processing, carry out repeatedly rolling again and annealing, the control process conditions are 450 ℃-550 ℃, are incubated 40 minutes-60 minutes, total working modulus is 65%-75% between annealing, obtains preparing the copper sheet soldering tablet of the cored solder of close attachment.