CN102776446A - Semi-high speed steel copper soldering inlaid steel cutting blade and manufacturing method thereof - Google Patents
Semi-high speed steel copper soldering inlaid steel cutting blade and manufacturing method thereof Download PDFInfo
- Publication number
- CN102776446A CN102776446A CN201210289224XA CN201210289224A CN102776446A CN 102776446 A CN102776446 A CN 102776446A CN 201210289224X A CN201210289224X A CN 201210289224XA CN 201210289224 A CN201210289224 A CN 201210289224A CN 102776446 A CN102776446 A CN 102776446A
- Authority
- CN
- China
- Prior art keywords
- steel
- semi
- high speed
- shear
- speed steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses a semi-high speed steel copper soldering inlaid steel cutting blade and a manufacturing method thereof, which belong to the field of mechanical blades. The cutting blade is manufactured by welding a semi-high speed shear steel on a cutter body through copper soldering, wherein the semi-high speed shear steel comprises the following chemical elements by weight percent: 0.56-0.65% of C, 0.40-0.60% of Si, 0.25-0.40% of Mn, 6.0-6.8% of Cr, 1.6-2.5% of W, 4.2-5.2% of Mo, 0.7-0.9% of V, 0.1-0.2% of Nb, 0.3-0.4% of one of Co or Ni, no more than 0.02% of S, no more than 0.025% of P and the balance of Fe. The method for preparing comprises: smelting the semi-high speed shear steel, carrying out forging rolling at 870 DEG C-1080 DEG C, and then annealing; secondarily, heating to 1160 DEG C-1180 DEG C, carrying out copper soldering to inlay steel, and quenching at the same time; and finally, tempering. The cutting blade has the same hardness as the original high speed steel copper soldering inlaid steel cutting blade, but has higher sharpness, and is easy for cutter sharpening, and the material cost and the technological cost are lowered.
Description
Technical field
The present invention relates to the technical field of mechanical bit, more particularly, relate to a kind of semi-high speed steel braze wilding edge steel cut paper blade and preparation method thereof.
Background technology
The use properties of cut paper blade should have high sharpness and wear resistance, also will have not collapse the excellent impact resistance do not rolled up and certain thermohardening.
In the past, the cut paper blade mainly was the edge steel cut paper blade that CrWMn steel and rapid steel are processed as shear-steel.The CrWMn steel is made the edge steel scudding knife of shear-steel, and hardness is HRC61～63, is mainly used in the cut paper blade of shearing the soft paper; W18Cr4V or W6Mo5Cr4V2 rapid steel are made the edge steel cut paper blade of shear-steel, and hardness is HRC64～66, are mainly used in scudding knifes such as shearing high quality high strength paper or fiber board.At present; The process method that shear-steel is spliced at the soft steel cutter hub has two kinds: hot rolling welding rapid steel scudding knife is adopted in (1); For example, the rapid steel of the domestic employing patent ZL200510028805.8 that has and soft steel non-oxidation edge system technology, weld seam shearing resistance 200 N/mm
2～300 N/mm
2(2) the rapid steel braze wilding that adopts of the good imperial high-speed steel cutter in the Anhui ltd Technology of splicing is the same with the cut paper blade of the world shear-steel of the same type technology of splicing, and weld seam is cut and cut strong degree ≧ 196N/mm
2, welding strength is a little less than the high temperature non-oxidation pressure rolling technology of splicing.In fact, for the edge steel cut paper blade that only receives the effect of longitudinal shear power, braze wilding edge hardness of steel can be satisfying the shearing resistance requirement of cut paper blade, but need further stabilize and increase; Though and hot rolling welding edge steel method can obtain higher welding strength; But, for rapid steel or semi-high speed steel shear-steel, the too high Heating temperature steel face of burning easily during hot rolling; Excessive deflection is excessive because of shear-steel and cutter hub plasticity difference; Not only hindered the continuity of the bonding surface of each road pressure rolling welding, but also can produce internal fissure, become semi-high speed steel or rapid steel cut paper blade and produce the high difficult problem of scrap rate from banded defective in the middle of the shear-steel.
Blade cutting edge sharpness and wear resistance depend primarily on the quantity and the distribution of ys, hardness and the carbide of shear-steel.Carbide in the blade shear-steel exists, and has both played wear-resisting effect, also plays the effect of point of a knife crack arrest, simultaneously, and the disadvantageous effect that also has the cutting edge carbide to come off.Carbide refinement in the blade shear-steel can improve obdurability and make blade keep smoothly sharp, and the excessive carbide of alligatoring peels off easily, and sharpness and wear resistance are descended.Therefore, shear-steel requires that high hardness and ys are arranged, and carbide refinement will reach high level (≤2 um) in its tissue; And quenching remains carbide quantity, distributing all has strict restriction; Too much and the skewness of quantity, the cutting edge carbide comes off both influences sharpness, also influences wear resistance; Quantity is very few or do not have, and the tiny crack of cutting edge can be expanded along cleavage surface, forms bigger chipping.
Keep cutting edge sharpness and sharpening property very important during the cut paper knife cut; Residue carbide volume(tric)fraction behind the rapid steel Q-tempering is between 15%～22%; The residue carbide size is 2.5 um～15 um; The carbide of cutting edge comes off easily, both can reduce sharpness, also causes chipping in the shear history easily.In recent years; Our research and analytic demonstration think, if adopt suitable semi-high speed steel shear-steel, reduces in the shear-steel between carbide quantity to 3%～8%; Matrix Q-tempering hardness keeps the level of rapid steel again; Can help improving cut paper blade sharpness, wearing quality and be sheared face smooth finish, and reduce the alloy amount cost of shear-steel, also improve anufacturability.The existing both at home and abroad semi-high speed steel patent that is applied to other tool and moulds is reported more with technology; But the carbide size and the quantative attribute of the scudding knife sheet shear-steel that do not suit; The hardness that also has is on the low side, for example the semi-high speed steel composition of announcement such as patent No. ZL200610085881.7 and application number 201010292113.5.
In addition, one Chinese patent application numbers 201110431102.5, the name of innovation and creation is called: a kind of drill bit is used rapid tool steel, and its set of dispense ratio is: C:0.90-0.98%; W:5.00-5.80%; Mo:4.00-4.60%; Cr:3.80-5.00%; V:1.80-2.20%; Mn:0.25-0.45%; Si:0.20-0.40%; Nb:0.08-0.30%; Co:1.30-1.60%; P :≤0.03%; S :≤0.03%; All the other are Fe.And for example, one Chinese patent application numbers 200910264467.6, the name of innovation and creation is called: wear-resistant high speed steel, the mass percent of its each composition is following: C:0.88-0.98%; W:4.30-4.80%; Mo:2.70-3.10%; Cr:3.80-4.30%; V:1.80-2.20%; Mn:0.20-0.40%; Si:1.10-1.50%; Nb:0.08-0.16%; Co:1.20-1.80%; P :≤0.03%; S :≤0.03%; All the other are Fe, and this application case is the steel grades of rapid steel.Above-mentioned two application cases have mainly overcome original TS and have had the quenching temperature narrow range; The problem that the work-ing life of cutter is lower; The composition adjustment of steel grade mainly is in order to reduce the consumption of noble metal tungsten and molybdenum; When but above-mentioned steel used as the shear-steel of cut paper blade, its sharpness, sharpening property and hardness all needed further to strengthen.
In this case, new cut paper blade shear-steel material is all being sought by main mechanical bit factory both at home and abroad, in the hope of substituting rapid steel edge steel cut paper blade.But, a lot of high alloy shear-steel materials that existing cut paper blade field is used, organizing of having is suitable, and hardness can only reach HRC60-63, does not reach the firmness level of rapid steel; The steel hardness that has is suitable, but the residue carbide is too much, and banded structure is heavier, can not improve the sharpness of rapid steel blade again significantly.To so far; Though the special high quality steel of existing both at home and abroad employing is made shear-steel and is substituted rapid steel shear-steel edge steel cut paper blade; But hardness is all on the low side, can only reach HRC61～63, does not still work out the shear-steel material of tissue and performance appropriate; Make hardness reach the level of rapid steel HRC64～66, and make use propertieies such as sharpness obviously be superior to the edge steel cut paper blade of rapid steel again.
Summary of the invention
The technical problem that invention will solve
The objective of the invention is to overcome the low deficiency with sharpening property difference of prior art high speed steel edge steel cut paper blade sharpness; A kind of semi-high speed steel braze wilding edge steel cut paper blade and preparation method thereof is provided; The cut paper blade that the shear-steel material prepn of employing optimization design of the present invention obtains; Its hardness reaches HRC64～66, and sharpness and sharpening performance obviously are superior to the edge steel cut paper blade that rapid steel is made shear-steel, and has reduced the alloy amount cost of shear-steel.
Technical scheme
For achieving the above object, technical scheme provided by the invention is:
A kind of semi-high speed steel braze wilding edge steel cut paper blade of the present invention, the cut paper blade is welded on the cutter hub through braze wilding by the semi-high speed steel shear-steel and processes, and this semi-high speed steel shear-steel is made up of the chemical element of following weight percentage: C:0.56～0.65%; Si:0.40～0.60%, Mn:0.25～0.40%, Cr:6.0～6.8%; W:1.6～2.5%, Mo:4.2～5.2%, V:0.7～0.9%; Nb:0.1～0.2%, one of Co or Ni: 0.3～0.4%, S≤0.02%; P≤0.025%, all the other are Fe.
Preferably, described semi-high speed steel shear-steel is made up of the chemical element of following weight percentage: C:0.58～0.62%, Si:0.48～0.52%, Mn:0.28～0.38%; Cr:6.12～6.60%, W:1.82～2.28%, Mo:4.45～4.94%; V:0.76～0.81%, Nb:0.13～0.16%, one of Co or Ni: 0.32～0.38%; S≤0.02%, P≤0.025%, all the other are Fe.
Semi-high speed steel shear-steel composition principle of design of the present invention is: (1) is C, Cr, W, Mo, the collocation of V content reasonably; Guarantee carbide quantity, distribution; And enough intensity, toughness; Add a small amount of suitable Nb and improve the ratio of MC in the carbide, and improve the solvent temperature of MC carbide in austenite, make it quenching temperature and reach 1160 ℃～1180 ℃ and quench simultaneously to be suitable for braze wilding; And prevent the too high massive carbide when eliminating molten steel solidification of MC carbide solvent temperature in austenite again, and guaranteed high ys and impact toughness index, avoid blade cutting edge burr and chipping in the usage period, to occur; (2) add a small amount of suitable Ni or Co to improve the bonding force of matrix with carbide; The tendency that comes off of carbide particle when reducing the cutting edge wearing and tearing; And hinder the annealing process atomic diffusion and promote the refinement carbide, what wherein contain Ni also helps the raising ys, and it is stronger to strengthen the effect of cutting edge sharpness; What contain Co makes carbide and basal body binding force stronger, can be according to the mechanical bit type selecting; (3) rational Cr, W, Mo, V ratio; Utilize the variation of dissimilar carbide phase constituents to make it precipitation hardening near tempering secondary hardening maximum hardness district; At C content and contain under the W amount situation more much lower than rapid steel and obtain high tempered-hardness, hardness reaches the level of W18Cr4V or W6Mo5Cr4V2 rapid steel.
To semi-high speed steel shear-steel composition range control explanation of the present invention as follows: it is low that C content is higher than the impelling strength of prescribing a time limit, and being lower than down in limited time, Q-tempering hardness reduces; Si content is higher than fragility increase in limited time and surface decarburization is increased the weight of, and being lower than down in limited time, intensity reduces; Contain the Mn amount and be higher than fragility increase in limited time, being lower than down in limited time, intensity reduces; Contain the Cr amount and be higher than the increase of time quenching remained austenite content, and make tempering temperature depart from the maximum hardness point of precipitation hardening, being lower than down, the hardening capacity of steel reduction in limited time reduces dry quenching hardness; Contain the W amount and be higher than M6C carbide size increase in limited time, being lower than down in limited time, tempered-hardness reduces; The higher Mo that contains measures the composition that has changed all kinds of carbide; Make tempering deposition separate out temperature near or speed up; Help reducing remained austenite content, improve tempered-hardness; Be that the hardness of tempering secondary hardening reaches the flat key of universal high speed molten steel, be higher than that high-temp plastic is low in limited time, be lower than the tempered-hardness of prescribing a time limit down and obviously reduce but contain the Mo amount; V content is higher than in limited time and occurs massive carbide easily, is lower than down MC carbide quantity not sufficient in limited time, and solvent temperature reduces in the austenite, and residue carbide MC quantity is very few when quenching for 1160 ℃～1180 ℃, hinders grain growth ability variation; Add the little amount of N b solvent temperature of MC carbide in austenite that obviously raise, the austenite crystal that can hinder effectively when quenching heating is grown up, but too high levels not only occurs massive carbide easily but also increased material cost; Ni or the Co amount that contains is lower than the reduction of bonded carbon thing effect in limited time down, and Ni is higher than the nodularization of influence annealing in limited time, and Co is higher than the upper limit not only influences impelling strength but also increased material cost.In a word, the shear-steel composition will strictly possess microstructure characteristic, technology characteristics and the performance characteristic of cut paper blade shear-steel.Shear-steel microstructure of the present invention and performance are applicable to the cut paper blade, and the shear-steel use characteristics is applicable to that braze wilding quenches simultaneously.
The preparation method of a kind of semi-high speed steel braze wilding edge steel cut paper blade of the present invention the steps include:
(1) produce the semi-high speed steel shear-steel:
Produce the semi-high speed steel shear-steel through esr after adopting induction furnace or electric induction furnace smelting, this semi-high speed steel shear-steel is made up of the chemical element of following weight percentage: C:0.56～0.65%, Si:0.40～0.60%, Mn:0.25～0.40%; Cr:6.0～6.8%, W:1.6～2.5%, Mo:4.2～5.2%; V:0.7～0.9%, Nb:0.1～0.2%, one of Co or Ni: 0.3～0.4%; S≤0.02%, P≤0.025%, all the other are Fe;
(2) forging rolling operation:
The semi-high speed steel shear-steel that step (1) is produced carries out forging rolling, and its forging rolling temperature is 870 ℃～1080 ℃;
(3) annealing:
Semi-high speed steel shear-steel behind step (2) forging rolling is heated to 850 ℃～860 ℃, is incubated furnace cooling after 4～6 hours;
(4) braze wilding quenches simultaneously:
Semi-high speed steel shear-steel after step (3) processing is heated to 1160 ℃～1180 ℃ carries out braze wilding edge steel, the semi-high speed steel shear-steel is welded on processes the cut paper blade on the cutter hub, and carry out quench treatment simultaneously, air cooling behind 1.2～1.5 minutes/mm of insulation;
(5) tempering:
The cut paper blade of step (4) is heated to 540 ℃～550 ℃, is incubated 2～4 hours, tempering 2～3 times.In the above-mentioned heat treatment process, be below or above annealing temperature, annealed structure is bad or annealing hardness is higher; Quenching temperature surpasses the upper limit, grain coarsening and undissolved carbide quantity is reduced, and quenching temperature is lower than lower limit, can't carry out simultaneously with braze wilding, also influences Q-tempering hardness; Tempering temperature is higher than hardness reduction in limited time, and it is too high to be lower than the residual austenite of prescribing a time limit down.
Preferably, the semi-high speed steel shear-steel described in the step (1) is made up of the chemical element of following weight percentage: C:0.58～0.62%, Si:0.48～0.52%, Mn:0.28～0.38%; Cr:6.12～6.60%, W:1.82～2.28%, Mo:4.45～4.94%; V:0.76～0.81%, Nb:0.13～0.16%, one of Co or Ni: 0.32～0.38%; S≤0.02%, P≤0.025%, all the other are Fe.
Preferably, the forging rolling temperature is 950 ℃ ~ 1000 ℃ in the step (2).
Preferably, the semi-high speed steel shear-steel is heated to 1170 ℃ and carries out braze wilding edge steel in the step (4).
Beneficial effect
Adopt technical scheme provided by the invention, compare, have following unusual effect with existing known technology:
(1) a kind of semi-high speed steel braze wilding edge steel cut paper blade of the present invention; Its shear-steel microstructure both had been fit to the performance requriements of cut paper blade; Be fit to the requirement of blades such as wood working again; Shear-steel has the suitable microstructure of edge steel cut paper blade, and its sharpness and impelling strength are higher than the rapid steel shear-steel, have improved use properties;
(2) a kind of semi-high speed steel braze wilding edge steel cut paper blade of the present invention; Having reduced the residue carbide quantity of quenching, and carbide reasonable quantity, the refinement that is evenly distributed in the steel, not only having alleviated the cutting edge carbide particle degree that comes off; Guaranteed durability; And also be easy to mechanical sharpening and hand lapping in using, and avoided blade cutting edge burr and chipping in the usage period, to occur, improved the smooth finish of shearing;
(3) preparation method of a kind of semi-high speed steel braze wilding edge steel cut paper blade of the present invention; Under low relatively alloying condition, obtain high secondary hardening tempered-hardness; Under the situation that always alloy amount and C content are low relatively; Can obtain the hardness identical with rapid steel, its hardness reaches HRC64～66, and has reduced material cost and technology cost;
(4) a kind of semi-high speed steel braze wilding edge steel cut paper blade of the present invention; Its hardness is identical with rapid steel; But cost is low, be prone to sharpening, use properties is high, has overcome the drawback of rapid steel edge steel mechanical bit, has a wide range of applications in fields such as papermaking, printing, packing and wood working.
Description of drawings
Fig. 1 is the equilibrium phase diagram of semi-high speed steel shear-steel among the present invention;
Fig. 2 is semi-high speed steel shear-steel annealing stereoscan photograph among the present invention;
Fig. 3 for blade shear-steel Q-tempering among the present invention after metallograph;
Fig. 4 for blade shear-steel Q-tempering among the present invention after stereoscan photograph;
Fig. 5 is the structural representation of a kind of semi-high speed steel braze wilding edge steel cut paper blade of the present invention.
Label declaration in the synoptic diagram: 1-semi-high speed steel shear-steel; 2-braze wilding layer; The 3-cutter hub.
Embodiment
For further understanding content of the present invention, the present invention is described in detail in conjunction with accompanying drawing and embodiment.
Embodiment 1
A kind of semi-high speed steel braze wilding edge steel cut paper blade of present embodiment, the cut paper blade is welded on the cutter hub 3 through braze wilding by semi-high speed steel shear-steel 1 and processes, and the composition of this semi-high speed steel shear-steel 1 is as shown in table 1.Its concrete preparation method is following:
(1) produce the semi-high speed steel shear-steel:
At first prepare the semi-high speed steel shear-steel, adopt induction furnace or induction furnace+electric slag refusion and smelting semi-high speed steel shear-steel, satisfy semi-high speed steel shear-steel of the present invention and form: C:0.56～0.65% by the chemical element of following weight percentage; Si:0.40～0.60%, Mn:0.25～0.40%, Cr:6.0～6.8%; W:1.6～2.5%, Mo:4.2～5.2%, V:0.7～0.9%; Nb:0.1～0.2%, one of Co or Ni: 0.3～0.4%, S≤0.02%; P≤0.025%, all the other are Fe and unavoidable impurities; The composition of shear-steel of the present invention design is to analyze alloy system the balance each other weave construction and the phase transition process of calculation of thermodynamics; And carried out Q-tempering hardness and thermal treatment temp and calculated, and compared on cohesive energy calculation between alloy atom and the basis that performance is associated and proposition.Specifically, the alloy designs of semi-high speed steel comprises composition design, weave construction design, technological design and four aspects of performance prediction.According to the characteristic of high-carbon alloy steel, at first be directed against carbide type and quantity and change rule and carry out the prediction of carbide refinement with the thermodynamics method that balances each other; Secondly, according to the matrix composition that the thermodynamics method that balances each other calculates, carry out the calculating prediction of quenching hardness and tempered-hardness again; Then, according to the A that calculates
1The definite annealing temperature of point is confirmed the quenching temperature scope according to quenching undissolved carbide quantity and hardness, estimates the temperature of high secondary hardening from tempering carbide precipitate type and quantitative proportion, confirms tempering temperature with this; At last, according to bound energy and the hardness of calculating the martensitic matrix structure cell on electronics, the atom level, infer ys and toughness index.Finally, analyze the relatively data of the heterogeneity steel of all calculating, the requirement of contrast mechanical bit use properties, optimized choice goes out semi-high speed steel shear-steel composition.The semi-high speed steel shear-steel composition of present embodiment is as shown in table 1.
Composition/the wt% of the semi-high speed steel shear-steel material of table 1 embodiment 1 ~ 5
(2) forging rolling operation:
The semi-high speed steel shear-steel that step (1) is smelted carries out forging rolling, and the forging rolling temperature is 950 ℃ ~ 1000 ℃.
(3) annealing:
The semi-high speed steel shear-steel of step (2) forging rolling is heated to 850 ℃, is incubated furnace cooling after 5 hours; Semi-high speed steel shear-steel equilibrium phase diagram is as shown in Figure 1, and 850 ℃～860 ℃ temperature ranges, M23C6 and M6C growth and decline each other help the annealing process carbide refinement.The semi-high speed steel shear-steel annealing stereoscan photograph of present embodiment is shown in Fig. 2 (5000 *), and the carbide mean sizes is less than 1.5 μ m.
(4) braze wilding quenches simultaneously: the semi-high speed steel shear-steel after step (3) is handled is heated to 1170 ℃ and carries out braze wilding edge steel, and this braze wilding edge steel technology is welded on semi-high speed steel shear-steel 1 and processes the cut paper blade on the soft steel cutter hub 3 for existing common technology; Between semi-high speed steel shear-steel 1 and the soft steel cutter hub 3 braze wilding layer 2 (as shown in Figure 5); And carry out quench treatment simultaneously, and air cooling behind the 1.3 minutes/mm of insulation, promptly the cut paper blade soaking time of every centimetre of thickness is 1.3 minutes; Reason is that the cut paper blade is a plate workpiece; Soaking time when specifically producing, is in the time of 1170 ℃, to carry out the operation of braze wilding edge steel by THICKNESS CALCULATION; And be incubated air cooling behind the 1.3 minutes/mm, accomplish and quench.Not exclusively the undissolved carbide quantity of austenitizing is (referring to Fig. 1) between 3～8vt%, can hinder austenite crystal effectively and grow up.Metallograph is shown in Fig. 3 (500 *) behind the blade shear-steel Q-tempering, and the quenching grain fineness number is 10 grades.
(5) tempering:
The cut paper blade of step (4) is heated to 550 ℃, is incubated 3 hours, tempering 2 times.
After above-mentioned steps was handled, through mechanical workout, mechanical workout comprised the process step of smoothing, ground finish, hole milling type etc., created edge steel cut paper blade.Blade shear-steel stereoscan photograph after the tempering is shown in Fig. 4 (4000 *), and residue carbide quantity is 3.8%～5.8%, mean sizes≤1.5 μ m.The structural representation of the cut paper blade of this semi-high speed steel braze wilding edge steel is as shown in Figure 5, and the blade of present embodiment is suitable as the cut paper blade and uses, and wherein cut paper blade stock size is as shown in table 2.
The stock size of table 2 scudding knife
The experiment of hardness result of semi-high speed steel shear-steel is as shown in table 3 in the semi-high speed steel braze wilding edge steel cut paper blade of present embodiment.
The experiment of hardness value of table 3 embodiment 1 semi-high speed steel shear-steel
Embodiment 2
A kind of semi-high speed steel braze wilding edge steel cut paper blade of present embodiment, the cut paper blade is welded on the cutter hub 3 through braze wilding by semi-high speed steel shear-steel 1 and processes, and the composition of this semi-high speed steel shear-steel 1 is as shown in table 1.Its concrete preparation method is following:
(1) produce the semi-high speed steel shear-steel:
At first prepare the semi-high speed steel shear-steel, adopt induction furnace or induction furnace+electric slag refusion and smelting semi-high speed steel shear-steel, its composition is as shown in table 1.
(2) forging rolling operation:
The semi-high speed steel shear-steel that step (1) is smelted carries out forging rolling, and the forging rolling temperature is 870 ℃ ~ 930 ℃.
(3) annealing:
The semi-high speed steel shear-steel of step (2) forging rolling is heated to 860 ℃, is incubated furnace cooling after 4 hours.
(4) braze wilding quenches simultaneously:
Semi-high speed steel shear-steel after step (3) processing is heated to 1160 ℃ carries out braze wilding edge steel, semi-high speed steel shear-steel 1 is welded on processes the cut paper blade on the soft steel cutter hub 3, and carry out quench treatment simultaneously, air cooling behind the 1.5 minutes/mm of insulation.
(5) tempering:
The cut paper blade of step (4) is heated to 540 ℃, is incubated 2 hours, tempering 3 times.
The experiment of hardness result of the semi-high speed steel shear-steel of present embodiment is as shown in table 4, and after 540 ℃ of tempering, its hardness is HRC66.
The experiment of hardness value of table 4 embodiment 2 semi-high speed steel shear-steels
A kind of semi-high speed steel braze wilding edge steel cut paper blade of present embodiment, the cut paper blade is welded on the cutter hub 3 through braze wilding by semi-high speed steel shear-steel 1 and processes, and the composition of this semi-high speed steel shear-steel 1 is as shown in table 1.Its concrete preparation method is following:
(1) produce the semi-high speed steel shear-steel:
At first prepare the semi-high speed steel shear-steel, adopt induction furnace or induction furnace+electric slag refusion and smelting semi-high speed steel shear-steel, its composition is as shown in table 1.
(2) forging rolling operation:
The semi-high speed steel shear-steel that step (1) is smelted carries out forging rolling, and the forging rolling temperature is 940 ℃ ~ 990 ℃.
(3) annealing:
The semi-high speed steel shear-steel of step (2) forging rolling is heated to 850 ℃, is incubated furnace cooling after 6 hours.
(4) braze wilding quenches simultaneously:
Semi-high speed steel shear-steel after step (3) processing is heated to 1170 ℃ carries out braze wilding edge steel, semi-high speed steel shear-steel 1 is welded on processes the cut paper blade on the soft steel cutter hub 3, and carry out quench treatment simultaneously, air cooling behind the 1.2 minutes/mm of insulation.
(5) tempering:
The cut paper blade of step (4) is heated to 545 ℃, is incubated 3 hours, tempering 3 times.
The dimensions of the semi-high speed steel shear-steel of present embodiment is 1080mm * 127 mm * 12.7 mm, and the result is as shown in table 5 for its experiment of hardness, and after 545 ℃ of tempering, its hardness is HRC65.9.A kind of semi-high speed steel braze wilding edge steel cut paper Sharpening a knife blade of present embodiment was sheared 18 hours for 1 time, and rapid steel blade sharpening also can only be sheared 16～18 hours for 1 time.
The experiment of hardness value of table 5 embodiment 3 semi-high speed steel shear-steels
Embodiment 4
A kind of semi-high speed steel braze wilding edge steel cut paper blade of present embodiment, the cut paper blade is welded on the cutter hub 3 through braze wilding by semi-high speed steel shear-steel 1 and processes, and the composition of this rapid steel shear-steel 1 is as shown in table 1.Its concrete preparation method is following:
(1) produce the semi-high speed steel shear-steel:
At first prepare the semi-high speed steel shear-steel, adopt induction furnace or induction furnace+electric slag refusion and smelting semi-high speed steel shear-steel, its composition is as shown in table 1.
(2) forging rolling operation:
The semi-high speed steel shear-steel that step (1) is smelted carries out forging rolling, and the forging rolling temperature is 960 ℃ ~ 1010 ℃.
(3) annealing:
The semi-high speed steel shear-steel of step (2) forging rolling is heated to 855 ℃, is incubated furnace cooling after 6 hours.
(4) braze wilding quenches simultaneously:
Semi-high speed steel shear-steel after step (3) processing is heated to 1180 ℃ carries out braze wilding edge steel, semi-high speed steel shear-steel 1 is welded on processes the cut paper blade on the soft steel cutter hub 3, and carry out quench treatment simultaneously, air cooling behind the 1.2 minutes/mm of insulation.
(5) tempering:
The cut paper blade of step (4) is heated to 540 ℃, is incubated 4 hours, tempering 3 times.
The dimensions of the semi-high speed steel shear-steel of present embodiment is 1785mm * 160mm * 12.7mm, and the result is as shown in table 6 for its experiment of hardness, and after 540 ℃ of tempering, its hardness is HRC65.8.A kind of semi-high speed steel braze wilding edge steel cut paper Sharpening a knife blade of present embodiment was sheared 22 hours for 1 time, and rapid steel blade sharpening also can only be sheared 16～18 hours for 1 time.
The experiment of hardness value of table 6 embodiment 4 semi-high speed steel shear-steels
Embodiment 5
A kind of semi-high speed steel braze wilding edge steel cut paper blade of present embodiment, the cut paper blade is welded on the cutter hub 3 through braze wilding by semi-high speed steel shear-steel 1 and processes, and the composition of this semi-high speed steel shear-steel 1 is as shown in table 1.Its concrete preparation method is following:
(1) produce the semi-high speed steel shear-steel:
At first prepare the semi-high speed steel shear-steel, adopt induction furnace or induction furnace+electric slag refusion and smelting semi-high speed steel shear-steel, its composition is as shown in table 1.
(2) forging rolling operation:
The semi-high speed steel shear-steel that step (1) is smelted carries out forging rolling, and the forging rolling temperature is 1130 ℃ ~ 1180 ℃.
(3) annealing:
The semi-high speed steel shear-steel of step (2) forging rolling is heated to 860 ℃, is incubated furnace cooling after 4 hours.
(4) braze wilding quenches simultaneously:
Semi-high speed steel shear-steel after step (3) processing is heated to 1160 ℃ carries out braze wilding edge steel, semi-high speed steel shear-steel 1 is welded on processes the cut paper blade on the soft steel cutter hub 3, and carry out quench treatment simultaneously, air cooling behind the 1.5 minutes/mm of insulation.
(5) tempering:
The cut paper blade of step (4) is heated to 548 ℃, is incubated 3 hours, tempering 2 times.
The experiment of hardness result of the semi-high speed steel shear-steel of present embodiment is as shown in table 7, and after 548 ℃ of tempering, its hardness is HRC65.7.
The experiment of hardness value of table 7 embodiment 5 semi-high speed steel shear-steels
In addition; Adopt technical scheme production wood working of the present invention to indulge the slicing blade, its dimensions is 1550mm * 185mm * 20.5mm, and the soldering quenching temperature is 1170 ℃; Tempering temperature is 550 ℃; Tempered-hardness HRC is 64.3, but vertical 1 slicing of slicing Sharpening a knife blade of this wood working 4～5 hours, and 1 slicing of alloy-steel blade sharpening 2～3 hours.
The applicable cases of embodiment 1 ~ 5 shows that all a kind of semi-high speed steel braze wilding edge steel cut paper blade of the present invention is than former like product high life, and hardness is high.
Above embodiment only supplies to explain the present invention's usefulness; But not limitation of the present invention; Various process programs and application possibly made by each manufacturing enterprise or company in the mechanical bit field, so all edge steel or all steel mechanical bits that adopt shear-steel composition of the present invention to make; And other tool and mould product of equivalent technical solutions manufacturing also should belong to category of the present invention, all should be that claim limits.
Claims (6)
1. a semi-high speed steel braze wilding is inlayed steel cut paper blade, and it is characterized in that: the cut paper blade is welded on the cutter hub through braze wilding by the semi-high speed steel shear-steel and processes, and this semi-high speed steel shear-steel is made up of the chemical element of following weight percentage: C:0.56～0.65%; Si:0.40～0.60%, Mn:0.25～0.40%, Cr:6.0～6.8%; W:1.6～2.5%, Mo:4.2～5.2%, V:0.7～0.9%; Nb:0.1～0.2%, one of Co or Ni: 0.3～0.4%, S≤0.02%; P≤0.025%, all the other are Fe.
2. a kind of semi-high speed steel braze wilding edge steel cut paper blade according to claim 1, it is characterized in that: described semi-high speed steel shear-steel is made up of the chemical element of following weight percentage: C:0.58～0.62%, Si:0.48～0.52%, Mn:0.28～0.38%; Cr:6.12～6.60%, W:1.82～2.28%, Mo:4.45～4.94%; V:0.76～0.81%, Nb:0.13～0.16%, one of Co or Ni: 0.32～0.38%; S≤0.02%, P≤0.025%, all the other are Fe.
3. the preparation method of a semi-high speed steel braze wilding edge steel cut paper blade the steps include:
(1) produce the semi-high speed steel shear-steel:
Produce the semi-high speed steel shear-steel through esr after adopting induction furnace or electric induction furnace smelting, this semi-high speed steel shear-steel is made up of the chemical element of following weight percentage: C:0.56～0.65%, Si:0.40～0.60%, Mn:0.25～0.40%; Cr:6.0～6.8%, W:1.6～2.5%, Mo:4.2～5.2%; V:0.7～0.9%, Nb:0.1～0.2%, one of Co or Ni: 0.3～0.4%; S≤0.02%, P≤0.025%, all the other are Fe;
(2) forging rolling operation:
The semi-high speed steel shear-steel that step (1) is produced carries out forging rolling, and its forging rolling temperature is 870 ℃～1080 ℃;
(3) annealing:
Semi-high speed steel shear-steel behind step (2) forging rolling is heated to 850 ℃～860 ℃, is incubated furnace cooling after 4～6 hours;
(4) braze wilding quenches simultaneously:
Semi-high speed steel shear-steel after step (3) processing is heated to 1160 ℃～1180 ℃ carries out braze wilding edge steel, the semi-high speed steel shear-steel is welded on processes the cut paper blade on the cutter hub, and carry out quench treatment simultaneously, air cooling behind 1.2～1.5 minutes/mm of insulation;
(5) tempering:
The cut paper blade of step (4) is heated to 540 ℃～550 ℃, is incubated 2～4 hours, tempering 2～3 times.
4. the preparation method of a kind of semi-high speed steel braze wilding edge steel cut paper blade according to claim 3, it is characterized in that: the semi-high speed steel shear-steel described in the step (1) is made up of the chemical element of following weight percentage: C:0.58～0.62%, Si:0.48～0.52%; Mn:0.28～0.38%, Cr:6.12～6.60%, W:1.82～2.28%; Mo:4.45～4.94%, V:0.76～0.81%, Nb:0.13～0.16%; One of Co or Ni: 0.32～0.38%; S≤0.02%, P≤0.025%, all the other are Fe.
5. the preparation method of a kind of semi-high speed steel braze wilding edge steel cut paper blade according to claim 4, it is characterized in that: the forging rolling temperature is 950 ℃ ~ 1000 ℃ in the step (2).
6. the preparation method of a kind of semi-high speed steel braze wilding edge steel cut paper blade according to claim 5 is characterized in that: the middle semi-high speed steel shear-steel of step (4) is heated to 1170 ℃ and carries out braze wilding edge steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210289224.XA CN102776446B (en) | 2012-08-15 | 2012-08-15 | Semi-high speed steel copper soldering inlaid steel cutting blade and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210289224.XA CN102776446B (en) | 2012-08-15 | 2012-08-15 | Semi-high speed steel copper soldering inlaid steel cutting blade and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102776446A true CN102776446A (en) | 2012-11-14 |
| CN102776446B CN102776446B (en) | 2014-01-15 |
Family
ID=47121548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210289224.XA Active CN102776446B (en) | 2012-08-15 | 2012-08-15 | Semi-high speed steel copper soldering inlaid steel cutting blade and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102776446B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105603319A (en) * | 2016-01-01 | 2016-05-25 | 张磊 | Crushing device for kitchen waste |
| CN105908048A (en) * | 2016-05-18 | 2016-08-31 | 太仓市中厚机械有限公司 | Splitting machine blade |
| CN106017209A (en) * | 2016-06-02 | 2016-10-12 | 季长强 | Manufacturing method of bronze sword |
| CN107825084A (en) * | 2017-12-01 | 2018-03-23 | 河北华北柴油机有限责任公司 | A kind of preparation method of wear-resisting galvanized iron |
| CN110983186A (en) * | 2019-12-23 | 2020-04-10 | 镇江中森科技有限公司 | High alloy tool steel, method for manufacturing same, and method for using same as cutting edge steel insert-joint slicing knife |
| CN113924182A (en) * | 2019-05-28 | 2022-01-11 | 奥钢联精密带钢有限公司 | Cutting element for a saw chain and method for producing the same |
| CN114472896A (en) * | 2022-01-20 | 2022-05-13 | 南京惠诚工具制造有限公司 | Method for strengthening hardness of brazing tool blank |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108179361B (en) * | 2017-12-20 | 2019-10-25 | 安徽嘉龙锋钢刀具有限公司 | A kind of wear-resisting mechanical bit of low cobalt type |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540023A (en) * | 2003-04-09 | 2004-10-27 | ������������ʽ���� | High speed tool steel and its mfg. method |
| CN101962738A (en) * | 2010-11-10 | 2011-02-02 | 常州机械刀片有限公司 | Superfine carbide high-alloy tool steel shear-steel splicing mechanical blade |
-
2012
- 2012-08-15 CN CN201210289224.XA patent/CN102776446B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540023A (en) * | 2003-04-09 | 2004-10-27 | ������������ʽ���� | High speed tool steel and its mfg. method |
| CN101962738A (en) * | 2010-11-10 | 2011-02-02 | 常州机械刀片有限公司 | Superfine carbide high-alloy tool steel shear-steel splicing mechanical blade |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105603319A (en) * | 2016-01-01 | 2016-05-25 | 张磊 | Crushing device for kitchen waste |
| CN105908048A (en) * | 2016-05-18 | 2016-08-31 | 太仓市中厚机械有限公司 | Splitting machine blade |
| CN106017209A (en) * | 2016-06-02 | 2016-10-12 | 季长强 | Manufacturing method of bronze sword |
| CN107825084A (en) * | 2017-12-01 | 2018-03-23 | 河北华北柴油机有限责任公司 | A kind of preparation method of wear-resisting galvanized iron |
| CN113924182A (en) * | 2019-05-28 | 2022-01-11 | 奥钢联精密带钢有限公司 | Cutting element for a saw chain and method for producing the same |
| CN110983186A (en) * | 2019-12-23 | 2020-04-10 | 镇江中森科技有限公司 | High alloy tool steel, method for manufacturing same, and method for using same as cutting edge steel insert-joint slicing knife |
| CN114472896A (en) * | 2022-01-20 | 2022-05-13 | 南京惠诚工具制造有限公司 | Method for strengthening hardness of brazing tool blank |
| CN114472896B (en) * | 2022-01-20 | 2023-12-12 | 南京惠诚工具制造有限公司 | Method for reinforcing hardness of brazing tool blank |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102776446B (en) | 2014-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102766817B (en) | Semi-high speed steel shear steel | |
| CN102776446B (en) | Semi-high speed steel copper soldering inlaid steel cutting blade and manufacturing method thereof | |
| US20070006949A1 (en) | Steel alloy, holders and holder details for plastic moulding tools, and tough hardened blanks for holders and holder details | |
| CN103009026A (en) | Processing method for rolling scissors with high abrasion resistance and strong shock resistance | |
| CN101250669A (en) | Low-cobalt low alloy high-speed tool steel | |
| CN101020990A (en) | Series superfine carbide high alloy tool steel | |
| CN101250668A (en) | Hot work die steel | |
| US6663726B2 (en) | High-hardness prehardened steel for cold working with excellent machinability, die made of the same for cold working, and method of working the same | |
| CN102586700A (en) | High alloy tube piercing plug material and manufacturing method and surface processing method thereof | |
| CN102644027A (en) | Fixed-length shear blade and manufacturing method thereof | |
| CN114032464B (en) | High-performance shearing blade for wide and thick plates and manufacturing method thereof | |
| CN108756914A (en) | A kind of Hob cutter ring of shield machine and its manufacturing method with built-up welding nickel-base alloy | |
| CN102796958B (en) | Alloy designed steel mechanical blade for preventing network carbide on CrWMn steel from being separated out | |
| CN101962738B (en) | Superfine carbide high-alloy tool steel shear-steel splicing mechanical blade | |
| CN104250709A (en) | High quality TG42 saw blade high speed steel | |
| CN101024869A (en) | High-performance low-alloy niobium-contained high-speed steel | |
| CN108130478A (en) | A kind of Cr-W-Mo-V high alloy tool steels edge steel mechanical bit containing micro Nb | |
| CN112080705B (en) | Hob cutter ring and preparation method thereof | |
| CN104195440A (en) | Low-cost high-speed tool steel for cutting drill bit and preparation process of low-cost high-speed tool steel | |
| CN114427091B (en) | High-wear-resistance die steel product for hot stamping and additive manufacturing process thereof | |
| JP2001316769A (en) | Cold tool steel | |
| CN103243277A (en) | HB 400 grade crack-resisting martensite wear-resistant steel with high strength and production method | |
| WO2009082328A1 (en) | High speed steel | |
| CN102517514A (en) | Fe-C-Cr-W-Mo-Mn-V-Si-Ni high carbon medium-alloy steel | |
| CN103589956A (en) | Low-cobalt superhard high-speed tool steel for cutting drill bit and preparation technology thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |