CN106378510B - A kind of silver soldering processing method of four swords tungsten steel blade - Google Patents
A kind of silver soldering processing method of four swords tungsten steel blade Download PDFInfo
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- CN106378510B CN106378510B CN201610899517.8A CN201610899517A CN106378510B CN 106378510 B CN106378510 B CN 106378510B CN 201610899517 A CN201610899517 A CN 201610899517A CN 106378510 B CN106378510 B CN 106378510B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K5/00—Gas flame welding
- B23K5/006—Gas flame welding specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3006—Ag as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K5/00—Gas flame welding
- B23K5/12—Gas flame welding taking account of the properties of the material to be welded
- B23K5/16—Gas flame welding taking account of the properties of the material to be welded of different metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K5/00—Gas flame welding
- B23K5/213—Preliminary treatment
Abstract
The invention discloses a kind of silver soldering processing methods of four swords tungsten steel blade, belong to carbide cutter tool technical field.The present invention silver soldering procedure of processing be：One, it makes annealing treatment：Blade base is made annealing treatment, annealing temperature is 780 850 DEG C, and it is 700 750 DEG C that temperature is reduced after heat preservation, and heat preservation furnace cooling is come out of the stove to 420 500 DEG C；Two, roughing：Protrusion is ground in the both sides of blade base width direction, groove is ground in tungsten steel alloy；Three, welding-on：Flame welding is carried out using the welding rod of argentiferous 51% 56%, welding temperature completes the silver soldering processing of tungsten steel blade at 700 DEG C 750 DEG C.The present invention for the problem that four sword tungsten steel blades, blade and blade base how firm welding, start with from the processing of tungsten steel blade, welding process, make blade firm welding, not easily to fall off, the performance of whole tungsten steel blade is stable, quality is high, and service life is long.
Description
Technical field
The present invention relates to carbide cutter tool technical fields, add more specifically to a kind of silver soldering of four swords tungsten steel blade
Work method.
Background technology
Hard alloy is hard compounds and binding metal one kind made of powder metallurgical technique of refractory metal
Alloy material, with hardness, high, wear-resisting, intensity and a series of excellent performances such as toughness is preferable, heat-resisting, corrosion-resistant, extensive
As cutter material.Exactly these unique attributes of hard alloy make hard alloy have difficult processing and the prices of raw materials high
The features such as.The application of whole hard alloy material is caused to be limited by very large.But if using steel workability
With cheap feature, cutting tool is produced using the method for steel substrate and carbide chip welding, it not only can be big
The application range for improving the hard alloy greatly improves the service life of product, and cost can be greatly reduced.
Tungsten steel blade is a kind of a kind of hard being welded on using hard alloy wolfram steel as blade on steel blade base
Alloy blade, traditional structure is as depicted in figs. 1 and 2, and tungsten steel blade is long strip type structure, including blade base 1 and wolfram steel conjunction
Gold 3, offers mounting hole 2 along the length direction of blade base 1, flat-face fillet weld access slot, wolfram steel is offered in the side of blade base 1
Alloy 3 is placed in the flat-face fillet weld access slot, is welded as a whole with blade base 1.There are one benefits for the tungsten steel blade of such structure just
It is that tungsten steel alloy 3 and blade base 1 firm can weld, but its existing defect is exactly only there are one blade, blade uses one
After the section time, it will have to be changed reconditioning because of edge wear or directly replace, the service life of blade is shorter, also can
It is made troubles using producer to blade.
To solve the above-mentioned problems, blade manufacturers are seeking always a kind of new blade structure, but face another
Problem is exactly the Welding Problems of blade base 1 and tungsten steel alloy 3, is mainly manifested in：
(1) intensity of welding region is unable to reach requirement：Using welding procedure, the intensity of tungsten steel blade welding region compared with
Low, new blade structure must assure that blade base 1 and tungsten steel alloy 3 still are able to firm fixation, meet strong under use state
Degree requires；
(2) weld crack：Since the coefficient of thermal expansion of wolfram steel and the coefficient of thermal expansion of steel substrate are mutually far short of what is expected, welding
During will produce prodigious internal stress, therefore the inner blade after welding is also easy to produce fracture crack；
(3) stomata, be mingled with and aoxidize：During the welding process, if temperature is excessively high to cause carbide chip, steel
Matrix and solder surface oxidation, influence weld strength, or even the phenomenon that dry joint occur；But if temperature is too low, solder flowing
Property it is bad, stomata can be caused or be mingled with, these factors can all cause blade quality decline, service life reduction.
Through retrieval, Chinese Patent Application No. 201410349292.X, the applying date is on December 24th, 2014, innovation and creation name
Referred to as：A kind of superhard thin slice hard alloy brazing processing method；The step of this application is：One：Select the spelter solder containing silver-based；
Two：The fixed superhard thin slice hard alloy of installation and steel part；Three：Precision calculates and matching for superhard thin slice hard alloy and steel part is arranged
Close gap；Four：Copper sheet is added in fit clearance；Five：Superhard thin slice hard alloy, steel part are added using high frequency heating machine
Heat；Six：It is welded to adding the spelter solder containing silver-based in the fit clearance of superhard thin slice hard alloy and steel part；Seven：With
It closes in gap and adds scaling powder；Eight：Workpiece after welding is placed in heat-preservation cotton and is cooled to room temperature.This application, which avoids, to be added
There is hard alloy and crosses Thermal cracking or the problem of workpiece is integrally tempered in heat；Compensating plate is added simultaneously and absorbs weld residual stress, is kept away
Exempt from the cracking of weld seam.
China Patent Publication No. CN 1428222A, publication date are on July 9th, 2003, and invention and created name is：It is a kind of hard
The welding method of matter alloy cutting tool；This application makees cored solder brazed shank tool using silver-based solder, and when soldering closes in hard
Gold and base steel storeroom pass through the solder soldering connection be inserted on a soft red copper transition plate therebetween.Silver-based cored solder used
Piece is AgCuZnCd solder sheets, and the thermal stress generated after welding, which is effectively compensated by copper sheet, to be absorbed, and hard alloy is effectively reduced
Flake and fragment phenomenon after being brazed in cutter production improve the yield rate and cutter quality of cutter production, extend cutter life.
Above-mentioned application case is each provided with a kind of method for welding hard alloy cutter using silver-based solder, can obtain preferably
Welding effect, but a common feature of above-mentioned application case is to achieve the goal mainly by addition compensation copper sheet or to help weldering
Agent is made an issue of more there is no on silver-based solder, and above-mentioned application case ignores the low problem of blade welding region intensity,
It is still had certain limitations using upper.
Invention content
1. technical problems to be solved by the inivention
It is an object of the invention to solve above-mentioned problems of the prior art, a kind of four swords tungsten steel blade is provided
Silver soldering processing method；Traditional tungsten steel blade is increased to four blades by the present invention by single-blade first, improves conventional tungsten steel knife
The short problem of piece service life, secondly for the problem that four sword tungsten steel blades, blade and blade base how firm welding, from tungsten
The processing of steel blade, welding process are started with, and blade firm welding, not easily to fall off, performance stabilization, the quality of whole tungsten steel blade are made
Height, service life are long.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention is：
A kind of silver soldering processing method of four swords tungsten steel blade of the present invention, step are：
Step 1: annealing：Blade base is made annealing treatment, annealing temperature is 780-850 DEG C, when keeping the temperature one section
Between after reduce temperature be 700-750 DEG C, keep the temperature a period of time after furnace cooling come out of the stove to 420-500 DEG C；
Step 2: roughing：After step 1 makes annealing treatment, grind that there are finishings in the both sides of blade base width direction
The protrusion of spare time amount, the groove there are allowance for finish is ground in tungsten steel alloy；
Step 3: welding-on：
Blade base after step 2 is processed is fixed to locked, removing welding region surface oil, impurity and rust staining, and
Make the welding surface of blade base and tungsten steel alloy that there is certain roughness；Then welding powder is tuned into paste with water and is coated in welding table
Face carries out flame welding using the welding rod of argentiferous 51%-56%, and welding temperature completes the silver of tungsten steel blade at 700 DEG C -750 DEG C
Weldering processing.
Further, the blade base includes the component of following mass percent：C 0.35-0.52%；Si
0.21-0.35%；Mn 0.55-0.86%；S≤0.02%；P≤0.025%；Cr 0.12-0.23%；Ni≤0.25%；Cu
≤ 0.30%, surplus is Fe and inevitable impurity.
Further, in the annealing process of step 1, soaking time is related to the dimensional parameters of blade base, specifically
For：
H=kXp+(Yp+Zp)/2
In above formula, H is soaking time, unit min；K is adjustment factor；XpFor the length of blade base, unit mm；
YpFor the width of blade base, unit mm；ZpFor the thickness of blade base, unit mm.
Further, the value range of adjustment factor k is 0.005~0.065.
Further, in the annealing process of step 1, the rate for being warming up to annealing temperature is：
V=(T-T0) (Crwt+Mn wt)
In above formula, V is heating rate, and unit is DEG C/min；T is annealing temperature, and unit is DEG C that T0 is initial temperature, single
Position for DEG C, CrwtFor the mass percent value of Cr in rough forging, MnwtFor the mass percent value of Mn in rough forging.
Further, the cross section of the protrusion ground in step 2 is square structure, the width of the protrusion and a height of 0.3-
0.5mm；Similarly, the cross section of the groove is also square structure, and wide and height is also 0.3-0.5mm.
Further, in step 3 welding-on technique, the welding rod of argentiferous 53% is used.
Further, after step 3 welding-on is processed, isothermal holding need to be carried out to tungsten steel blade, tungsten steel blade is placed in
Isothermal holding is carried out in electric furnace, holding temperature is 50-90 DEG C, and soaking time is 24 hours, and then cooling is come out of the stove.
3. advantageous effect
Using technical solution provided by the invention, compared with existing known technology, there is following remarkable result：
(1) four sword tungsten steel blade of one kind of the invention plays two protrusions, by tungsten in the both sides of the width direction of blade base
Steel alloy is fixed on blade base in a welding manner, and traditional tungsten steel blade is increased to the upper and lower of tungsten steel blade by single-blade
There are blade in 4 corners in left and right, improve the short problem of traditional tungsten steel blade service life, and a blade damage blade uses
Producer directly changes another blade use into, also saves the time for changing reconditioning, saves with knife cost；
(2) four sword tungsten steel blade of one kind of the invention is closed blade base and wolfram steel using the welding rod of argentiferous 51%-56%
Gold is welded as a whole, and the welding rod of the silver content can melt very well at a temperature of 700 DEG C~750 DEG C of welding flame, and fiery herein
Welding process can be effectively avoided to generate weld crack, stomata and be mingled at a temperature of flame, so that it is guaranteed that blade base and tungsten steel alloy
Reliable welding, weldquality is high, along with two protrusions of blade base can play auxiliary humidification, the machinery of tungsten steel blade
Intensity is fully able to reach requirement；
(3) the silver soldering processing method of a kind of four swords tungsten steel blade of the invention carries out the soaking time in annealing process
Scientific design, it is associated with the dimensional parameters of blade base, it overcomes tradition and fully relies on the control of technical staff experience
The extensive pattern of soaking time, easily leads to the uneven problem of different heat product quality levels, after annealed technique, blade base
Interior tissue is more uniform, and crystal structure is more preferable；
(4) the silver soldering processing method of a kind of four swords tungsten steel blade of the invention, in annealing operation, by heating rate of annealing
Associated with the mass percent value of Mn in blade base and Cr, annealing process coordinates blade base component, can make blade base
The tissue of body is easy to control and stability is good, and the possibility that blade base generates weld crack is reduced in follow-up welding process,
It also can further ensure that the straightness and verticality of tungsten steel blade simultaneously；
(5) the silver soldering processing method of a kind of four swords tungsten steel blade of the invention, after welding-on is processed, also to tungsten steel blade
Isothermal holding is carried out, contributes to the internal organizational structure for further stablizing blade base welding region, weakens and produced in welding process
Raw internal stress improves the welding quality of blade.
Description of the drawings
Fig. 1 is the structural schematic diagram of traditional tungsten steel blade；
Fig. 2 is the side view of Fig. 1；
Fig. 3 is the structural schematic diagram of tungsten steel blade in the present invention；
Fig. 4 is the side view of Fig. 3.
Label declaration in schematic diagram：
1, blade base；2, mounting hole；3, tungsten steel alloy；31, blade；32, raised.
Specific implementation mode
To further appreciate that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
Referring to Fig. 3 and Fig. 4, the four sword tungsten steel blade of one kind of the present embodiment is string configuration.Tungsten steel blade includes blade
Matrix 1 and tungsten steel alloy 3, the blade base 1 include the component of following mass percent：C 0.35%；Si 0.35%；
Mn 0.55%；S 0.02%；P 0.025%；Cr 0.12%；Ni 0.25%；Cu 0.30%, surplus is for Fe and unavoidably
Impurity.
It is spaced apart along the length direction of blade base 1 and is equipped with mounting hole 2, the both sides of 1 width direction of blade base are provided with
The cross section of protrusion 32, protrusion 32 is square structure, and the length of the protrusion 32 is identical as the length of tungsten steel blade；The tungsten steel alloy
3 are correspondingly arranged fluted, the fit depressions of the protrusion 32 and tungsten steel alloy 3 of blade base 1, i.e., protrusion 32 is inserted into tungsten steel alloy
In 3 groove, and it is welded and fixed using the welding rod of argentiferous 53% between tungsten steel alloy 3 and blade base 1.
It is worth noting that the welding rod of argentiferous 53% described in the present embodiment refers to the weldering in argentiferous 50% on sale on the market
On the basis of item (such as Bag-7 silver solders), silver content is increased to 53%.Inventor points out, makes to solve existing tungsten steel blade
The problem of with short life, there is 4 corners up and down that traditional tungsten steel blade increases to tungsten steel blade by single-blade
Blade 31 (referring to Fig. 4), such blade damage blade are directly changed into another blade use using producer, also saved
The time for changing reconditioning saves with knife cost.But the problem of another is had to and faces is then, relative to tradition in blade base
The side of body 1 opens up trough with straight angle, and tungsten steel alloy 3 is placed in the trough with straight angle, the mode being welded as a whole with blade base 1, this reality
Great difficulty can be carried out to welded bands by applying the blade structure of example, and the intensity of weld is difficult to meet actual operation requirements.
In order to solve this problem, inventor is provided with protrusion 32 in the both sides of 1 width direction of blade base first, this is convex
Play 32 main auxiliary enhancings, on the one hand in the welding process, which is conducive to blade base 1 and wolfram steel
The fixation of alloy 3, welding operation of being more convenient for；On the other hand, the protrusion 32 can also play an auxiliary enhancing after being welded
The effect of welding region intensity.
Secondly, inventor is just studied on solder, and as being introduced in the background technology, welding procedure is held bad
Can there are low intensity, crackle, stomata, a series of problems, such as being mingled with and aoxidizing, inventor has found, uses argentiferous on the market more
The welding rod of 20%-30%, blade manufacturer seldom will recognize that using argentiferous be more than 40% welding rod, trace it to its cause mainly because
Content for silver is higher, and the price of welding rod is higher.In order to coordinate the new tungsten steel blade structure of four swords, required welding effect is obtained
Fruit, inventor attempt the welding rod using argentiferous 50% on sale on the market, it is found that welding effect is significantly improved, but weld
The intensity in region does not still reach requirement, and can still have the phenomenon that tungsten steel alloy 3 falls off.For this purpose, inventor continues from many aspects
It attempts, the various aspects such as silver content of the component proportion of blade base 1, the processing technology of tungsten steel blade and welding rod is all adjusted
It is whole, a preferable technical solution is finally determined, the component proportion of blade base 1, the processing technology of tungsten steel blade are done
Adjustment can be introduced below, it is the most suitable that the silver content of welding rod is ultimately determined to 53%.The welding rod of the silver content 700 DEG C~
It can be melted very well at a temperature of 750 DEG C of welding flame, and can effectively avoid welding process to generate welding under this flame temperature and split
Line, stomata and it is mingled with, so that it is guaranteed that blade base and tungsten steel alloy reliably weld, weldquality is high, along with blade base
Two protrusions can play auxiliary humidification, and the mechanical strength of tungsten steel blade is fully able to reach requirement.
A kind of silver soldering processing method of four swords tungsten steel blade of the present embodiment, step are：
Step 1: raw material prepare：Blade base 1 includes the component of following mass percent：C 0.35%；Si
0.35%；Mn 0.55%；S 0.02%；P 0.025%；Cr 0.12%；Ni 0.25%；Cu 0.30%, surplus be Fe and
Inevitable impurity.Tungsten steel alloy 3 is using Luxembourg's Sen Lameide K30 type wolfram steel.
Step 2: annealing：Blade base 1 in step 1 is made annealing treatment, annealing temperature is 850 DEG C, is protected
After warm a period of time reduce temperature be 750 DEG C, keep the temperature a period of time after furnace cooling come out of the stove to 500 DEG C.Soaking time and blade
The dimensional parameters of matrix 1 are related, specially：
H=kXp+(Yp+Zp)/2
In above formula, H is soaking time, unit min；K is adjustment factor；The value range of adjustment factor k be 0.005~
0.065, specific value is depended on the circumstances by technical staff, but the blade base 1 of identical dimensional parameters is in principle using unified
Adjustment factor, the adjustment factors of different holding stages can be different；XpFor the length of blade base 1, unit mm；YpFor knife
The width of sheet matrix 1, unit mm；ZpFor the thickness of blade base 1, unit mm.1 length X of blade basep, width YpAnd thickness
Spend ZpShould not refinement really measure, by technical staff at the scene roughly determine.Blade base 1 is a length of in the present embodiment
4000mm, width 70mm, thickness 10mm, adjustment factor k take 0.065.I.e. blade base 1 is made annealing treatment, annealing temperature
Be 850 DEG C, heat preservation 5 hours after reduce temperature be 750 DEG C, heat preservation 5 hours after furnace cooling come out of the stove to 500 DEG C.
The present embodiment joins the size of itself and blade base to having carried out scientific design to the soaking time in annealing process
Number is associated, overcomes the extensive pattern that tradition fully relies on technical staff's experience control soaking time, easily leads to different heats
The uneven problem of product quality level, after annealed technique, blade base interior tissue is more uniform, and crystal structure is more preferable.
In addition, in annealing process, the rate for being warming up to annealing temperature is：
V=(T-T0) (Crwt+Mn wt)
In above formula, V is heating rate, and unit is DEG C/min；T is annealing temperature, and unit is DEG C that T0 is initial temperature, single
Position for DEG C, CrwtFor the mass percent value of Cr in rough forging, MnwtFor the mass percent value of Mn in rough forging.
The present embodiment is in annealing operation, by the mass percent value phase of heating rate and Mn in blade base and Cr of annealing
Association, annealing process coordinate blade base component, can make that the tissue of blade base is easy to control and stability is good, subsequently welding
Blade base is reduced in termination process and generates the possibility of weld crack, while also can further ensure that the straightness of tungsten steel blade
And verticality.
Step 3: roughing：After step 2 makes annealing treatment, blade base 1 and tungsten steel alloy 3 be made to there are finishing
The workpiece of surplus, roughing technique are：
1) lower planes of milling cutter sheet matrix 1 and two sides；
2) scribing line punching is carried out to blade base 1；
3) levelling machine corrects, and then grinds protrusion 32 in the both sides of 1 width direction of blade base, is ground in tungsten steel alloy 3
Groove.The cross section of the protrusion 32 ground is square structure, and the width and height of the protrusion 32 are 0.5mm；Similarly, the groove
Cross section be also square structure, wide and height is also 0.5mm.
Step 4: welding-on：
Blade base 1 after step 3 is processed is fixed to locked, removing welding region surface oil, impurity and rust staining,
And make the welding surface of blade base 1 and tungsten steel alloy 3 that there is certain roughness；Then welding powder is tuned into paste with water and is coated in weldering
Surface is connect, flame welding is carried out using the welding rod of argentiferous 53%, welding temperature is 720 DEG C.
After step 4 welding-on is processed, isothermal holding need to be carried out to tungsten steel blade, tungsten steel blade is placed in electric furnace and is carried out
Isothermal holding, holding temperature are 50 DEG C, and soaking time is 24 hours, and then cooling is come out of the stove.The isothermal holding contributes to further
Stablize the internal organizational structure of blade base welding region, weakens the internal stress generated in welding process, improve the welding of blade
Quality.
Step 5: the corase grinding of tungsten steel blade：
1) two planes of tungsten steel blade are ground to using plain wheel by the allowance for finish there are 0.5mm；
2) use diamond grit wheel that the lower planes of tungsten steel blade and two sides are ground to more than the finishing there are 0.5mm
Amount；
Step 6: the finishing of tungsten steel blade：Finishing is carried out to lower planes and two sides using diamond minute surface grinding wheel
Work.
Embodiment 2
The four sword tungsten steel blade of one kind of the present embodiment, substantially with embodiment 1, the difference is that：The knife of the present embodiment
Sheet matrix 1 includes the component of following mass percent：C 0.52%；Si 0.21%；Mn 0.86%；S 0.02%；P
0.025%；Cr 0.23%；Ni 0.25%；Cu 0.30%, surplus are Fe and inevitable impurity.The wolfram steel of the present embodiment
It is welded and fixed using the welding rod of argentiferous 56% between alloy 3 and blade base 1.
A kind of silver soldering processing method of four swords tungsten steel blade of the present embodiment, step are：
Step 1: raw material prepare：Blade base 1 includes the component of following mass percent：C 0.52%；Si
0.21%；Mn0.86%；S 0.02%；P 0.025%；Cr 0.23%；Ni 0.25%；Cu 0.30%, surplus is for Fe and not
Evitable impurity.Tungsten steel alloy 3 is using Luxembourg's Sen Lameide K30 type wolfram steel.
Step 2: annealing：Blade base 1 in step 1 is made annealing treatment, annealing temperature is 780 DEG C, is protected
After warm a period of time reduce temperature be 700 DEG C, keep the temperature a period of time after furnace cooling come out of the stove to 420 DEG C.Soaking time and blade
The dimensional parameters of matrix 1 are related, specially：
H=kXp+(Yp+Zp)/2
In above formula, H is soaking time, unit min；K is adjustment factor；The value range of adjustment factor k is 0.005,
XpFor the length of blade base 1, unit mm；YpFor the width of blade base 1, unit mm；ZpFor the thickness of blade base 1,
Unit is mm.
In addition, in annealing process, the rate for being warming up to annealing temperature is：
V=(T-T0) (Crwt+Mn wt)
In above formula, V is heating rate, and unit is DEG C/min；T is annealing temperature, and unit is DEG C that T0 is initial temperature, single
Position for DEG C, CrwtFor the mass percent value of Cr in rough forging, MnwtFor the mass percent value of Mn in rough forging.
Step 3: roughing：After step 2 makes annealing treatment, blade base 1 and tungsten steel alloy 3 be made to there are finishing
The workpiece of surplus, roughing technique are：
1) lower planes of milling cutter sheet matrix 1 and two sides；
2) scribing line punching is carried out to blade base 1；
3) levelling machine corrects, and then grinds protrusion 32 in the both sides of 1 width direction of blade base, is ground in tungsten steel alloy 3
Groove.The cross section of the protrusion 32 ground is square structure, and the width and height of the protrusion 32 are 0.3mm；Similarly, the groove
Cross section be also square structure, wide and height is also 0.3mm.
Step 4: welding-on：
Blade base 1 after step 3 is processed is fixed to locked, removing welding region surface oil, impurity and rust staining,
And make the welding surface of blade base 1 and tungsten steel alloy 3 that there is certain roughness；Then welding powder is tuned into paste with water and is coated in weldering
Surface is connect, flame welding is carried out using the welding rod of argentiferous 56%, welding temperature is 700 DEG C.
After step 4 welding-on is processed, isothermal holding need to be carried out to tungsten steel blade, tungsten steel blade is placed in electric furnace and is carried out
Isothermal holding, holding temperature are 90 DEG C, and soaking time is 24 hours, and then cooling is come out of the stove.
Step 5: the corase grinding of tungsten steel blade：
1) two planes of tungsten steel blade are ground to using plain wheel by the allowance for finish there are 0.5mm；
2) use diamond grit wheel that the lower planes of tungsten steel blade and two sides are ground to more than the finishing there are 0.5mm
Amount；
Step 6: the finishing of tungsten steel blade：Finishing is carried out to lower planes and two sides using diamond minute surface grinding wheel
Work.
Embodiment 3
The four sword tungsten steel blade of one kind of the present embodiment, substantially with embodiment 1, the difference is that：The knife of the present embodiment
Sheet matrix 1 includes the component of following mass percent：C 0.46%；Si 0.27%；Mn 0.65%；S 0.02%；P
0.025%；Cr 0.18%；Ni 0.25%；Cu 0.30%, surplus are Fe and inevitable impurity.The wolfram steel of the present embodiment
It is welded and fixed using the welding rod of argentiferous 51% between alloy 3 and blade base 1.
A kind of silver soldering processing method of four swords tungsten steel blade of the present embodiment, step are：
Step 1: raw material prepare：Blade base 1 includes the component of following mass percent：C 0.46%；Si
0.27%；Mn 0.65%；S 0.02%；P 0.025%；Cr 0.18%；Ni 0.25%；Cu 0.30%, surplus be Fe and
Inevitable impurity.Tungsten steel alloy 3 is using Luxembourg's Sen Lameide K30 type wolfram steel.
Step 2: annealing：Blade base 1 in step 1 is made annealing treatment, annealing temperature is 800 DEG C, is protected
After warm a period of time reduce temperature be 720 DEG C, keep the temperature a period of time after furnace cooling come out of the stove to 440 DEG C.Soaking time and blade
The dimensional parameters of matrix 1 are related, specially：
H=kXp+(Yp+Zp)/2
In above formula, H is soaking time, unit min；K is adjustment factor；The value range of adjustment factor k is 0.015,
XpFor the length of blade base 1, unit mm；YpFor the width of blade base 1, unit mm；ZpFor the thickness of blade base 1,
Unit is mm.
In addition, in annealing process, the rate for being warming up to annealing temperature is：
V=(T-T0) (Crwt+Mn wt)
In above formula, V is heating rate, and unit is DEG C/min；T is annealing temperature, and unit is DEG C that T0 is initial temperature, single
Position for DEG C, CrwtFor the mass percent value of Cr in rough forging, MnwtFor the mass percent value of Mn in rough forging.
Step 3: roughing：After step 2 makes annealing treatment, blade base 1 and tungsten steel alloy 3 be made to there are finishing
The workpiece of surplus, roughing technique are：
1) lower planes of milling cutter sheet matrix 1 and two sides；
2) scribing line punching is carried out to blade base 1；
3) levelling machine corrects, and then grinds protrusion 32 in the both sides of 1 width direction of blade base, is ground in tungsten steel alloy 3
Groove.The cross section of the protrusion 32 ground is square structure, and the width and height of the protrusion 32 are 0.4mm；Similarly, the groove
Cross section be also square structure, wide and height is also 0.4mm.
Step 4: welding-on：
Blade base 1 after step 3 is processed is fixed to locked, removing welding region surface oil, impurity and rust staining,
And make the welding surface of blade base 1 and tungsten steel alloy 3 that there is certain roughness；Then welding powder is tuned into paste with water and is coated in weldering
Surface is connect, flame welding is carried out using the welding rod of argentiferous 51%, welding temperature is 730 DEG C.
After step 4 welding-on is processed, isothermal holding need to be carried out to tungsten steel blade, tungsten steel blade is placed in electric furnace and is carried out
Isothermal holding, holding temperature are 60 DEG C, and soaking time is 24 hours, and then cooling is come out of the stove.
Step 5: the corase grinding of tungsten steel blade：
1) two planes of tungsten steel blade are ground to using plain wheel by the allowance for finish there are 0.5mm；
2) use diamond grit wheel that the lower planes of tungsten steel blade and two sides are ground to more than the finishing there are 0.5mm
Amount；
Step 6: the finishing of tungsten steel blade：Finishing is carried out to lower planes and two sides using diamond minute surface grinding wheel
Work.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (8)
1. a kind of silver soldering processing method of four swords tungsten steel blade, step are：
Step 1: annealing：Blade base (1) is made annealing treatment, annealing temperature is 780-850 DEG C, when keeping the temperature one section
Between after reduce temperature be 700-750 DEG C, keep the temperature a period of time after furnace cooling come out of the stove to 420-500 DEG C；
Step 2: roughing：After step 1 makes annealing treatment, grind that there are finishings in the both sides of blade base (1) width direction
The protrusion (32) of spare time amount, the groove there are allowance for finish is ground in tungsten steel alloy (3)；
Step 3: welding-on：
Blade base (1) after step 2 is processed is fixed locked, welding region surface oil, impurity and rust staining are removed, and
Make the welding surface of blade base (1) and tungsten steel alloy (3) that there is certain roughness；Then welding powder paste is tuned into water to be coated in
Face of weld carries out flame welding using the welding rod of argentiferous 51%-56%, and welding temperature completes wolfram steel knife at 700 DEG C -750 DEG C
The silver soldering of piece is processed.
2. a kind of silver soldering processing method of four swords tungsten steel blade according to claim 1, it is characterised in that：The blade
Matrix (1) includes the component of following mass percent：C 0.35-0.52%；Si 0.21-0.35%；Mn 0.55-0.86%；S
≤ 0.02%；P≤0.025%；Cr 0.12-0.23%；Ni≤0.25%；Cu≤0.30%, surplus is for Fe and inevitably
Impurity.
3. a kind of silver soldering processing method of four swords tungsten steel blade according to claim 2, it is characterised in that：Step 1 is moved back
In ignition technique, soaking time is related to the dimensional parameters of blade base (1), specially：
H=kXp+(Yp+Zp)/2
In above formula, H is soaking time, unit min；K is adjustment factor；XpFor the length of blade base (1), unit mm；Yp
For the width of blade base (1), unit mm；ZpFor the thickness of blade base (1), unit mm.
4. a kind of silver soldering processing method of four swords tungsten steel blade according to claim 3, it is characterised in that：Adjustment factor k
Value range be 0.005~0.065.
5. according to a kind of silver soldering processing method of four swords tungsten steel blade of claim 2~4 any one of them, it is characterised in that：
In the annealing process of step 1, the rate for being warming up to annealing temperature is：
V=(T-T0) (Crwt+Mnwt)
In above formula, V is heating rate, and unit is DEG C/min；T is annealing temperature, and unit is DEG C that T0 is initial temperature, and unit is
DEG C, CrwtFor the mass percent value of Cr in rough forging, MnwtFor the mass percent value of Mn in rough forging.
6. a kind of silver soldering processing method of four swords tungsten steel blade according to claim 5, it is characterised in that：It is ground in step 2
The cross section of the protrusion (32) gone out is square structure, the width of the protrusion (32) and a height of 0.3-0.5mm；Similarly, the groove
Cross section be also square structure, it is wide and it is high be also 0.3-0.5mm.
7. a kind of silver soldering processing method of four swords tungsten steel blade according to claim 5, it is characterised in that：Step 3 welding-on
In technique, the welding rod of argentiferous 53% is used.
8. a kind of silver soldering processing method of four swords tungsten steel blade according to claim 5, it is characterised in that：Step 3 welding-on
After processed, isothermal holding need to be carried out to tungsten steel blade, tungsten steel blade is placed in electric furnace and carries out isothermal holding, holding temperature is
50-90 DEG C, soaking time is 24 hours, and then cooling is come out of the stove.
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| JPH07124804A (en) * | 1993-10-29 | 1995-05-16 | Mitsubishi Materials Corp | Cutting chip showing excellent wear resistance |
| JPH09103901A (en) * | 1995-10-09 | 1997-04-22 | Mitsubishi Materials Corp | Composite cutting chip with cutting edge piece having good joining strength |
| CN1231322C (en) * | 2001-12-27 | 2005-12-14 | 西北有色金属研究院 | Welding method of hard alloy cutting tool |
| CN1218809C (en) * | 2003-06-10 | 2005-09-14 | 李嘉珍 | High-strength silver-base brazing alloy and use thereof |
| CN2850772Y (en) * | 2005-12-30 | 2006-12-27 | 河南富耐克超硬材料有限公司 | Superhard cutting blade |
| CN101077533A (en) * | 2007-07-05 | 2007-11-28 | 上海美恩精密工具有限公司 | Multi-edge composite cutting tools |
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| CN204094165U (en) * | 2014-08-01 | 2015-01-14 | 常州西利合金工具有限公司 | Four sword rose reamers |
| CN204209187U (en) * | 2014-10-23 | 2015-03-18 | 汉中凯锐机电有限责任公司 | Bimetallic integral solder cutter |
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