CN108044188A - A kind of 65Mn circular saw bits processing technology - Google Patents
A kind of 65Mn circular saw bits processing technology Download PDFInfo
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- CN108044188A CN108044188A CN201711405846.3A CN201711405846A CN108044188A CN 108044188 A CN108044188 A CN 108044188A CN 201711405846 A CN201711405846 A CN 201711405846A CN 108044188 A CN108044188 A CN 108044188A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D65/00—Making tools for sawing machines or sawing devices for use in cutting any kind of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D63/00—Dressing the tools of sawing machines or sawing devices for use in cutting any kind of material, e.g. in the manufacture of sawing tools
- B23D63/06—Upsetting the cutting edges of saw teeth, e.g. swaging
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
- C21D1/20—Isothermal quenching, e.g. bainitic hardening
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/30—Stress-relieving
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/24—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for saw blades
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/009—Pearlite
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- Mechanical Engineering (AREA)
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- Materials Engineering (AREA)
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- Heat Treatment Of Steel (AREA)
Abstract
The present invention relates to a kind of 65Mn circular saw bits processing technologys, include the following steps：Blanking intercepts 65Mn hot rolling pole materials；Forging, forges the 65Mn hot rolling pole materials of interception, to obtain the blank of production circular saw bit；Stress relief annealing anneals gained blank after forging between 550 DEG C 650 DEG C；Blank after stress relief annealing, is processed the basic configuration of circular saw bit, obtains circular saw bit semi-finished product by thick mechanical processing；Final heat treatment；Finishing；Cleaning.The beneficial effects of the invention are as follows：Improved by increasing forging and stress relief annealing process, material internal compared with coarse pearlity tissue high rigidity, big brittleness, the hardness for being organized as acinous pearlite, significantly reducing material after annealing improves plasticity, and material is made to have preferable machinability.
Description
Technical field
The present invention relates to spring steel technical field of thermal treatment more particularly to a kind of 65Mn circular saw bits processing technologys.
Background technology
China's process industry grows continuously and fast in recent years, China is made to become a manufacture big country, countries in the world are big
Import Chinese products are measured, Chinese products machine-building product in the product of outlet occupies the overwhelming majority, and spring is very heavy
The machine components wanted, it is various machinery in rise damping, energy storage, support, dynamometry, return, transmission the effects that.It is in national defence, automobile
It is widely applied in industry, instrument, instrument, building, hardware household electrical appliances and daily life.
Spring steel is the various helical springs of manufacture, disc spring, leaf spring, torsional spring, scrollwork spring, wood cutter and other shapes or class
Like the material of performance part, spring steel must have the needs that excellent performance and quality could meet product.Spring steel will have
The flexible limit, tensile strength and hardness and preferable plasticity, to obtain preferable comprehensive mechanical property, by more than 60 years
Continuous development, domestic spring steel from scratch, substantially meets the requirement of the national economic development so far, but still there is production skill
Art is backward, equipment is outmoded, and product design and dimensional accuracy are low, and performance and quality are not high enough, to high-performance, high quality, long-life
Etc. high added values spring steel can not also produce.
Since the 21th century, since spring steel has excellent performance, its application range is made to expand rapidly, especially
That the carpenter's circular saw bit demand being commonly used in current building trade rapidly increases, with which type of material and processing method come
The carpenter's circular saw bit for ensureing now to use is on active service under various severe rugged environments, reaches high intensity, the requirement of long-life becomes in the industry
The problem of research.By testing for many years, alloy spring steel such as 55CrSi2,60Si2MnA, 50CrV4 are returned through normal quenching+medium temperature
Circular saw bit after fire can meet blade continuous-stable under high linear speed and work, bear larger impact load, have enough
Bending strength, high hardness, intensity, elastic limit and wearability, and longer service life.But these alloy spring steels are former
Material purchasing price is high, and the price of equivalent weight material is the 2 times or more of common spring steel, and material is not easy to obtain.That
Research and development it is a kind of cheap and can meet have superperformance circular saw bit production technology it is imperative.
People have developed therefore produces circular saw bit, traditional 65Mn spring steel production circular saw using 65Mn spring steel
Blade technolgy is：Blanking, mechanical roughing, common oil hardening, average tempering, finishing and cleaning.By current tradition 65Mn springs
Steel produces the influence of circular saw bit technique, and the blade quality produced is not sufficiently stable, and material internal is mainly thicker piece
Shape pearlite, such tissue hardness is high, brittleness is big, is unfavorable for processing, and easily deforms and crack after quenching, and is producing
Easily occur defective work in journey, and using common oil hardening+average tempering heat treatment process after material roughing, although hardness
Pre-provisioning request can be reached, but it is big in finished product hardening break tendency, and finished product pick-up rate is low.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of 65Mn circular saw bits processing technology, above-mentioned existing to overcome
Deficiency in technology.
The technical solution that the present invention solves above-mentioned technical problem is as follows：A kind of 65Mn circular saw bits processing technology, including such as
Lower step：
Step S100, blanking intercepts 65Mn hot rolling pole materials；
Step S200, forge, the 65Mn hot rolling pole materials of interception are forged, to obtain the base of production circular saw bit
Material；
Gained blank after forging between 550 DEG C -650 DEG C is kept the temperature 8h-10h and moved back by step S300, stress relief annealing
Fire；
Blank after stress relief annealing is processed the basic configuration of circular saw bit by step S400, thick mechanical processing, with
To circular saw bit semi-finished product；
Step S500, final heat treatment；
Step S600, finish；
Step S700, clean.
The beneficial effects of the invention are as follows：By increasing forging and stress relief annealing process, the thicker sheet pearl of material internal
Body of light tissue high rigidity, big brittleness are improved, the hardness for being organized as acinous pearlite, significantly reducing material after annealing,
Plasticity is improved, material is made to have preferable machinability.
Based on the above technical solutions, the present invention can also be improved as follows.
Further, in the step S100, the 65Mn hot rolling pole materials under intercepting need to meet forging ratio for 3-4.
Further, the inside metallographic after circular saw bit semi-finished product progress final heat treatment is tempered troostite tissue.
Further, the final heat treatment includes the following steps：
Step S510, isothermal hardening carries out circular saw bit semi-finished product in the salt made from earth containing a comparatively high percentage of sodium chloride in salt bath furnace isothermal hardening, quenching
Temperature is 250 DEG C -350 DEG C, time 20min-25min；
Step S520, it is tempered, the circular saw bit semi-finished product after isothermal hardening is taken out, and carries out temper, tempering temperature
It spends for 300 DEG C -400 DEG C, tempering time 2h.
Further, in the step S510, needed first to circular saw before isothermal hardening is carried out to circular saw bit semi-finished product
Piece semi-finished product are heated.
Further, the heating specifically comprises the following steps：
Preheating, circular saw bit semi-finished product are put into stove and are preheated, and preheating temperature is 580 DEG C -620 DEG C, preheating time
For 5min-6min；
Heating, after preheating, circular saw bit semi-finished product is put into salt bath furnace and are heated, heating temperature 815
DEG C -825 DEG C, heating time 3min-4min.
It is further had the beneficial effect that using above-mentioned：By matching the forging of early period and stress relief annealing process so that
Saw blade is not susceptible to deform and crack, and ensure that the stability for the saw blade quality produced, and product qualified rate is high.
Further, in the step S520, after the circular saw bit semi-finished product after isothermal hardening are taken out, need first rapidly with dry
Dry wood sawdust dries salt marsh, then is flattened with forcing press, finally carries out temper.
Further, in the step S700, cleaning be specially by the circular saw bit semi-finished product after finishing 80 DEG C-
Boiling in 100 DEG C, then cleaned in clear water, until cleaning.
Further, after cleaning, the circular saw bit semi-finished product of cleaned gained are carried out at finished product destressing tempering
Reason, destressing temperature are 150 DEG C -180 DEG C, time 3h-4h.
It is further had the beneficial effect that using above-mentioned：Because machining stress is larger, finished product is placed to be also occurred that for a period of time
Warpage, it is therefore necessary to carry out destressing temper, and be tempered by using above-mentioned destressing so that product internal stress obtains
It eliminates, deformation is small, size is highly stable.
Further, by circular saw bit semi-finished product carry out finished product destressing temper after, to circular saw bit semi-finished product into
Row surface peening, wherein, surface peening includes turn blue processing or phosphorating treatment.
It is further had the beneficial effect that using above-mentioned：The aesthetics, durability and resistant to rust ability of saw blade can be enhanced.
Description of the drawings
Fig. 1 is the flow chart of 65Mn spring steel circular saw bit processing technology of the present invention；
Fig. 2 is the performance diagram of isothermal hardening in 65Mn spring steel circular saw bit processing technology of the present invention；
Fig. 3 is tempering characteristics graph after isothermal hardening in 65Mn spring steel circular saw bit processing technology of the present invention；
Fig. 4 is tempering characteristics graph after 65Mn spring steel circular saw bit processing technology of the present invention finishing；
Fig. 5 is the metallographic structure after isothermal quenching+tempering in 65Mn spring steel circular saw bit processing technology of the present invention
Figure.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
As shown in Figure 1, a kind of 65Mn circular saw bits processing technology, includes the following steps：
Step S100, blanking intercepts 65Mn hot rolling pole materials with sawing machine, wherein, the 65Mn hot rolling poles material intercepted needs
Meet forging ratio for 3-4, wherein forging ratio is for the reason for 3-4：Too small forging ratio, material deformation is insufficient, internal grain
It is broken incomplete, still with the presence of a large amount of lamellar pearlite tissues, it is unfavorable for the transformation of subsequent heat treatment material inside organization structure,
Final finished coarse grains, are unevenly distributed, and influence intensity and toughness；
Step S200, forge, the 65Mn hot rolling pole materials of interception are forged, to obtain the base of production circular saw bit
Material, wherein, in forging, setting initial forging temperature is 1100 DEG C ± 10 DEG C, final forging temperature is 800 DEG C ± 10 DEG C, and the forging temperature that will begin
Spending the reason for being respectively set to above-mentioned numberical range with final forging temperature is：Because if forging temperature sets excessively high material grains to hold
It easily grows up to form coarse-grain, can so reduce forging quality, when material burning forms intergranular oxidation or fusing, occurs when forging broken
It splits, forging temperature setting is too low, and material does not have enough plasticity, the big tonnage for improving metal forming machinery of deformation antibody power, production effect
Rate is low or even has the risk of cracking；
Gained blank after forging between 550 DEG C -650 DEG C is kept the temperature 8h-10h and moved back by step S300, stress relief annealing
Fire, wherein, specific soaking time need to according to batch number determine, amount multidate is to extending soaking time, it is ensured that material
Material internal stress completely eliminates during material forging, reduces processing hardening, in favor of subsequent machining, and annealing temperature is set
It is because temperature is excessively high not to belong to stress relief annealing temperature range, annealing temperature more than material phase transformation temperature spot between 550 DEG C -650 DEG C
Degree is too low and does not have the effect for eliminating stress；
Step S400, thick mechanical processing, removes the extra surplus of the blank after stress relief annealing, processes circular saw
The basic configuration of piece, wherein, including processing endoporus, tooth form etc., obtain circular saw bit semi-finished product；
The inside metallographic of circular saw bit semi-finished product is changed into tempered troostite group by step S500, final heat treatment
It knits；
Step S600, finish；
Step S700, clean, wherein, cleaning is specially at 80 DEG C -100 by the circular saw bit semi-finished product after finishing
Boiling 1h-1.5h in DEG C, then cleaned in clear water, until cleaning, wherein, removal parts list can be more easy to by boiling to wash in boiling water
The greasy dirt in face effectively prevents the pollution of follow-up quenching liquid and the Adhesion enhancement of more favourable sequent surface processing phosphating coat.
In addition, after cleaning, finished product destressing temper is carried out to the circular saw bit semi-finished product of cleaned gained,
Destressing temperature be 150 DEG C -180 DEG C, time 3h-4h, wherein, destressing temperature for 150 DEG C -180 DEG C be because
To be so avoided that it is too many that excessively high temperature declines the hardness of workpiece, intensity and wearability can have a greatly reduced quality.
And after circular saw bit semi-finished product are carried out finished product destressing temper, circular saw bit semi-finished product are carried out
Surface peening, wherein, surface peening includes turn blue processing or phosphorating treatment.
In the present embodiment, the step S500 progress final heat treatment specifically comprises the following steps：
Step S510, circular saw bit semi-finished product are heated in isothermal hardening, after heating, by disk
Saw blade semi-finished product, which are placed in the salt made from earth containing a comparatively high percentage of sodium chloride in salt bath furnace, carries out isothermal hardening, wherein, isothermal hardening and isothermal in the oil in salt made from earth containing a comparatively high percentage of sodium chloride
Quenching is compared, and workpiece will not form vapor film when being cooled down in melting nitrate quenching agent, has temperature in use height, temperature in use model
Width is enclosed, workpiece quenching distortion is small, easy to clean, can obtain the advantages that more excellent mechanical property, and hardening heat is 250 DEG C -350
DEG C, preferably 300 DEG C -320 DEG C, time 20min-25min, preferably 22min；
Step S520, it is tempered, the circular saw bit semi-finished product after isothermal hardening is taken out, and is wiped with dry wood sawdust rapidly
Dry salt marsh, then flattened with forcing press, temper is then carried out, temperature is 300 DEG C -400 DEG C, tempering time 2h,
It under normal circumstances without temper, and increases temper in the present invention, is being quenched preferably to eliminate workpiece
When the internal stress that generates, reduce workpiece deformation and the effect of stable dimensions.
In the present embodiment, the heating specifically comprises the following steps：
Preheating, circular saw bit semi-finished product are put into stove and are preheated, and preheating temperature is 580 DEG C -620 DEG C, preheating time
For 5min-6min, directly heating mode of heating can be taken under normal circumstances, because if being directly warming up to hardening heat highest
Point, heating is too fast to cause larger temperature gradient, and workpiece surface coarse-grain and mixed crystal occurs, can reduce inside and outside temperature after preheated
Difference reduces internal stress, reduces and deforms and crack caused by thermal stress, reduces workpiece in the heating time of high-temperature region, reduction oxygen
Change decarburizing tendency, and reduce the deformation of high-temperature residence, the concrete numerical value of preheating time is to reach the preheating of setting inside and outside workpiece
Temperature is advisable；
Heating, after preheating, circular saw bit semi-finished product is put into salt bath furnace and are heated, heating temperature 815
DEG C -825 DEG C, heating time 3min-4min, wherein, the concrete numerical value of heating temperature reaches complete Austria with inside workpiece tissue
Family name's bodyization is more reasonable, and the concrete numerical value of heating time is more reasonable with inside workpiece austenite homogenization.
When the processing technology is applied to actual production, following method may be employed and produced in batches：
A kind of 65Mn circular saw bits processing technology, includes the following steps：
Step A100, blanking intercepts 65Mn hot rolling pole materials with sawing machine, wherein, the 65Mn hot rolling poles material intercepted needs
Meet forging ratio more than 3；
Step A200, forge, the 65Mn hot rolling pole materials of interception are forged, to obtain the base of production circular saw bit
Material；
Step A300, stress relief annealing anneals gained blank after forging between 550 DEG C -650 DEG C；
Step A400, thick mechanical processing, removes the extra surplus of the blank after stress relief annealing, processes circular saw
The basic configuration of piece, wherein, including processing endoporus, tooth form etc., obtain circular saw bit semi-finished product；
Step A500, final heat treatment, final heat treatment uses isothermal hardening+tempering mode, specific as follows：
A510, binding tie up circular saw bit semi-finished product with No. 20 iron wire single-pieces of 4-6 stocks, and iron wire has to tie saw
Piece surface, per two panels be a string, have special fixture can 4 be a string；
A520, preheating are placed two to three string circular saw bit semi-finished product into preheating furnace, circular saw bit semi-finished product are carried out pre-
Heat, preheating temperature are 580 DEG C -620 DEG C, preheating time 5min-6min；
A530, heating after preheating, one to two string circular saw bit semi-finished product are added in into salt bath furnace, to circular saw bit
Semi-finished product are heated, and heating temperature is 815 DEG C -825 DEG C, heating time 3min-4min；
A540, isothermal hardening after heating, circular saw bit semi-finished product are placed in the salt made from earth containing a comparatively high percentage of sodium chloride in salt bath furnace and carry out isothermal
Quenching, hardening heat are 300 DEG C -320 DEG C, time 20min-25min, isothermal temperature can limit suitably on the upper side, but during isothermal
Between no more than 30min；
A550, pressing, circular saw bit semi-finished product are rapid to be wiped with dry wood sawdust after the isothermobath in salt bath furnace comes out
Dry salt marsh, is flattened with forcing press, wherein, the reason for drying salt marsh with wood sawdust is：Sawdust is relatively dry, dirt-removing power is strong, makes
With it is at low cost the characteristics of, and the reason for being flattened with forcing press be：Because workpiece unavoidably deforms after isothermal hardening, while hot
The deflection of workpiece can be corrected in time by flattening, and improve the flatness of workpiece；
A560, tempering, the circular saw bit semi-finished product tentatively flattened are tempered on special tempering clamp, often prick 30~40
Piece, puts a gasket between every 5~6, and gasket material is Q235A steel, 20~25mm of thickness, outer diameter 10mm bigger than saw blade or so,
It is processed by plain grinding, mandrel is No. 45 steel of 4mm, is tempered in shaft furnace and clamps progress, and temperature is 300 DEG C -400 DEG C,
Tempering time is 2h, and tempering can also clamp while hot after coming out of the stove, and be cooled to room temperature and dismantle, and in this step, on the one hand mandrel can fill
On the other hand the gasket of binding piece can prevent in tempering installing and using for the inconvenient follow-up finished product of bore deformation in saw blade installation；
Step A600, finish, the obtained circular saw bit semi-finished product of final heat treatment are finished；
Step A700, clean, circular saw bit semi-finished product are dismantled piecewise, are cleaned up, the boiling 1h- in 80 DEG C -100 DEG C
It when 1.5h is small, then is cleaned in clear water, until cleaning；
Step A800, after cleaning, finished product is carried out to the circular saw bit semi-finished product of cleaned gained for finished product destressing
Destressing temper, destressing temperature are 150 DEG C -180 DEG C, time 3h-4h；
Step A900, surface peening, after circular saw bit semi-finished product are carried out finished product destressing temper, to circular saw
Piece semi-finished product carry out surface peening, wherein, surface peening includes turning blue processing or phosphorating treatment, obtain 65Mn circular saw bits into
Product.
The circular saw bit manufactured through above-mentioned technique to 65Mn spring steel carries out metallographic structure and mechanics properties testing, in finished product
Portion's metallographic structure is tempered troostite, has intensity high, impact flexibility is good, there is preferable comprehensive mechanical performance, and hardness reaches
HRC44-52, tensile strength >=980MPa, yield strength >=784MPa, elongation percentage>8%, the contraction percentage of area>30%.Items
Energy index reaches design requirement.Product is tried out through workshop, can continuously and stably be worked, can be born larger under high linear speed
Impact load, have enough bending strengths, high hardness, intensity, elastic limit, wearability, can meet it is longer use the longevity
The requirement of life, wherein, Fig. 2 is the characteristic curve of isothermal hardening in 65Mn spring steel circular saw bit processing technology of the present invention
Figure, Fig. 3 are that tempering characteristics graph, Fig. 4 are after isothermal hardening in 65Mn spring steel circular saw bit processing technology of the present invention
Tempering characteristics graph after 65Mn spring steel circular saw bit processing technology finishing of the present invention, Fig. 5 are of the present invention
Metallographic structure figure in 65Mn spring steel circular saw bit processing technologys after isothermal quenching+tempering, wherein, it is shown in figure and is
Metallograph in 100um length ranges.
Although the embodiment of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of 65Mn circular saw bits processing technology, which is characterized in that include the following steps：
Step S100, blanking intercepts 65Mn hot rolling pole materials；
Step S200, forge, the 65Mn hot rolling pole materials of interception are forged, to obtain the blank of production circular saw bit；
Gained blank after forging between 550 DEG C -650 DEG C is kept the temperature 8h-10h and annealed by step S300, stress relief annealing；
Blank after stress relief annealing is processed the basic configuration of circular saw bit, to be justified by step S400, thick mechanical processing
Disk saw blade semi-finished product；
Step S500, final heat treatment；
Step S600, finish；
Step S700, clean.
2. a kind of 65Mn circular saw bits processing technology according to claim 1, which is characterized in that in the step S100,
65Mn hot rolling pole materials under interception need to meet forging ratio for 3-4.
3. a kind of 65Mn circular saw bits processing technology according to claim 1 or 2, which is characterized in that circular saw bit half into
Inside metallographic after product progress final heat treatment is tempered troostite tissue.
A kind of 4. 65Mn circular saw bits processing technology according to claim 3, which is characterized in that the final heat treatment bag
Include following steps：
Step S510, isothermal hardening carries out isothermal hardening, hardening heat in the salt made from earth containing a comparatively high percentage of sodium chloride in salt bath furnace to circular saw bit semi-finished product
For 250 DEG C -350 DEG C, time 20min-25min；
Step S520, it is tempered, the circular saw bit semi-finished product after isothermal hardening is taken out, and carry out temper, temperature is
300 DEG C -400 DEG C, tempering time 2h.
5. a kind of 65Mn circular saw bits processing technology according to claim 4, which is characterized in that in the step S510,
It needs first to heat circular saw bit semi-finished product before isothermal hardening is carried out to circular saw bit semi-finished product.
6. a kind of 65Mn circular saw bits processing technology according to claim 5, which is characterized in that described to heat specifically
Include the following steps：
Preheating, circular saw bit semi-finished product are put into stove and are preheated, and preheating temperature is 580 DEG C -620 DEG C, and preheating time is
5min-6min；
Heating, after preheatings, circular saw bit semi-finished product are put into salt bath furnace and are heated, heating temperature for 815 DEG C-
825 DEG C, heating time 3min-4min.
7. a kind of 65Mn circular saw bits processing technology according to claim 4, which is characterized in that in the step S520,
After circular saw bit semi-finished product after isothermal hardening are taken out, first salt marsh is dried with the wood sawdust of drying rapidly, then with forcing press pressure
It is flat, finally carry out temper.
8. a kind of 65Mn circular saw bits processing technology according to claim 1, which is characterized in that in the step S700,
Cleaning is specially by circular saw bit semi-finished product boiling in 80 DEG C -100 DEG C after finishing, then is cleaned in clear water, directly
Until cleaning.
9. a kind of 65Mn circular saw bits processing technology according to claim 1, which is characterized in that right after cleaning
The circular saw bit semi-finished product of cleaned gained carry out finished product destressing temper, and destressing temperature is 150 DEG C -180 DEG C,
Time is 3h-4h.
10. a kind of 65Mn circular saw bits processing technology according to claim 9, which is characterized in that by circular saw bit half
After finished product carries out finished product destressing temper, surface peening is carried out to circular saw bit semi-finished product, wherein, surface peening includes hair
Indigo plant processing or phosphorating treatment.
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| CN108555392A (en) * | 2018-06-11 | 2018-09-21 | 杭州和源精密工具有限公司 | The preparation method of oversize cold saw |
| CN109266831A (en) * | 2018-11-26 | 2019-01-25 | 江苏天硕合金材料有限公司 | Heat treatment method is used in a kind of production of saw blade |
| CN110218855A (en) * | 2019-06-27 | 2019-09-10 | 马鞍山市恒利达机械刀片有限公司 | A method of overcoming blade heat-treatment distortion |
| CN110640216A (en) * | 2019-08-14 | 2020-01-03 | 杭州博野精密工具有限公司 | Cold saw circular saw blade manufacturing process |
| CN110863092A (en) * | 2018-08-27 | 2020-03-06 | 成都飞机工业（集团）有限责任公司 | Heat treatment process method for complex curved surface closed inner cavity part |
| CN111034771A (en) * | 2019-11-22 | 2020-04-21 | 马鞍山市松林刮刀锯有限公司 | Carcass cutting saw blade and manufacturing method thereof |
| CN112941275A (en) * | 2021-02-03 | 2021-06-11 | 鑫光热处理工业(昆山)有限公司 | Anti-deformation salt bath quenching process for clutch reinforcing disc |
| CN113564332A (en) * | 2021-07-20 | 2021-10-29 | 人本股份有限公司 | Heat treatment method for shock absorber bearing component |
| CN114959549A (en) * | 2022-05-13 | 2022-08-30 | 山东宏丰智能装备有限公司 | Chemical heat treatment process with high low-temperature impact absorption power of movable elbow |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108555392A (en) * | 2018-06-11 | 2018-09-21 | 杭州和源精密工具有限公司 | The preparation method of oversize cold saw |
| CN110863092A (en) * | 2018-08-27 | 2020-03-06 | 成都飞机工业（集团）有限责任公司 | Heat treatment process method for complex curved surface closed inner cavity part |
| CN109266831A (en) * | 2018-11-26 | 2019-01-25 | 江苏天硕合金材料有限公司 | Heat treatment method is used in a kind of production of saw blade |
| CN110218855A (en) * | 2019-06-27 | 2019-09-10 | 马鞍山市恒利达机械刀片有限公司 | A method of overcoming blade heat-treatment distortion |
| CN110640216A (en) * | 2019-08-14 | 2020-01-03 | 杭州博野精密工具有限公司 | Cold saw circular saw blade manufacturing process |
| CN111034771A (en) * | 2019-11-22 | 2020-04-21 | 马鞍山市松林刮刀锯有限公司 | Carcass cutting saw blade and manufacturing method thereof |
| CN112941275A (en) * | 2021-02-03 | 2021-06-11 | 鑫光热处理工业(昆山)有限公司 | Anti-deformation salt bath quenching process for clutch reinforcing disc |
| CN113564332A (en) * | 2021-07-20 | 2021-10-29 | 人本股份有限公司 | Heat treatment method for shock absorber bearing component |
| CN114959549A (en) * | 2022-05-13 | 2022-08-30 | 山东宏丰智能装备有限公司 | Chemical heat treatment process with high low-temperature impact absorption power of movable elbow |
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Application publication date: 20180518 |