CN107574298A - A kind of solid waste crusher cutter steel - Google Patents
A kind of solid waste crusher cutter steel Download PDFInfo
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- CN107574298A CN107574298A CN201710766643.0A CN201710766643A CN107574298A CN 107574298 A CN107574298 A CN 107574298A CN 201710766643 A CN201710766643 A CN 201710766643A CN 107574298 A CN107574298 A CN 107574298A
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- cutter
- heat treatment
- steel
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- solid waste
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Abstract
The present invention relates to a kind of solid waste crusher cutter steel, and its preparation method includes final heat treatment step, and combines application of the coating technology on cutter, so that solid waste crusher cutter can have excellent abrasion resistance properties and service life.Using reheating water quenching again, the final heat treatment mode being tempered afterwards, segmented heating is especially provided with first heating, solid waste crusher cutter steel is both reached higher strong hardness, it can avoid, because the cooling velocity of follow-up water quenching is too high, causing cutter distortion or cracking again.Tempering cooling stage after water quenching, and segmented cooling is employed, there is certain help to the abrasion resistance properties for improving finished product.Laser melting coating forms the technique of alloy coat after heat treatment, further enhancing the anti-wear performance and service life of cutter steel product.And, the solid waste crusher cutter of the present invention employs specific starting material element with steel and forms and match, content and proportionate relationship to Si, Mn, Cr, Mo, Co, V have done specific aim adjustment, so as to ensure that final product obtains required combination property.
Description
Technical field
The present invention relates to cutter steel field, is to be related to a kind of solid waste crusher cutter steel specifically.
Background technology
Cutter can not be only from the point of view of the sharpness or hardness of cutter with the quality of steel, and should mainly make from it
With steel：This four aspects of strong hardness, corrosion resistance, toughness, machinability are integrated to evaluate.For cutter performance and
Speech, most important manufacturing step are heat treatment, and poor steel may also produce more preferable blade by good heat treatment
Come, poor either very poor heat treatment may make good cutter lose its some inherent characteristics with steel or lead
Hard steel is caused to become fragile.
Heat treatment can improve the microstructure of steel, make to reach required desired physical considerations.Toughness, hardness and wearability are can
With by heat treatment and the characteristic that obtains.These characteristics are obtained, the quenching in heat treatment, tempering, annealing etc. need to be used to operate.
Tool work piece after forging after a series of processing by final heat treatment the indexs such as its hardness, intensity can meet
It is required that.Especially for the use environment required for solid waste disintegrating machine cutter, due to usually containing sand in solid waste
The things such as stone, cause tool wear very fast, will often change within 2,3 months a knife, and cutter somewhat expensive, while wear and bring again
Power consumption increases.Therefore, how by improving Final Heat Treatment Process, make cutter product that there is excellent abrasion resistance properties and use
In the life-span, it is to have technical problem to be solved at present.
The content of the invention
It is solid the invention provides one kind in order to solve the problems, such as the above-mentioned performance of solid waste crusher cutter steel
Body waste material crusher cutter steel, its preparation method includes final heat treatment step, and combines coating technology on cutter
Application so that solid waste crusher cutter can have excellent abrasion resistance properties and service life.
A kind of solid waste crusher cutter steel, it is characterised in that：The preparation method of the cutter steel includes
Final heat treatment step, the final heat treatment step are entered by the way of sensing heating to the cutter after roughing with steel
Row is heated to 950~1050 DEG C for the first time, and soaking time is 2.5~3h, is air-cooled to room temperature, then reheating to 800~850
DEG C, water quenching after 1~2h is incubated, water is stirred during quenching, is again loaded into after water quenching in heating furnace, in 500~600 DEG C of tempering
1~2h is incubated, is then air-cooled to room temperature；
Also include cladding coating step after the final heat treatment, obtain the cutter steel product afterwards；
The bending strength of the cutter steel product reaches 2500~2800MPa, and hardness is up to 55~65HRC.
The cutter is formed with steel raw material comprising following element：C:0.60-0.70%, Si:0.30-0.50%, Mn:
0.30-0.50%, Cr:3.50-5.50%, Mo:0.50-1.00%, Co:1.00-1.50%, Al:0.05-0.10%, V:0.05-
0.10%, P ＜ 0.01%, S ＜ 0.02%, surplus are Fe and inevitable impurity.
In the cladding coating step, after the cutter obtained after tempering is cleaned with steel, existed using laser cladding equipment
Cutter forms alloy coat with steel surface, and coated powder is self-fluxing nature iron(-)base powder, and powder size is 100~150 mesh,
Chemical composition includes Cr:10.00~12.00%, W:1.00~2.00%, B:3.00~3.50%, laser work(in laser cladding process
Rate is 2.5kW, sweep speed 300mm/min, powder feeding rate 35mg/min.
The first heating of the final heat treatment with steel by the cutter after roughing specifically, load induction heater
In, 400~450 DEG C are at the uniform velocity warming up in 3~5h, soaking time is 0.5~1h, is then continuously heating to 50~80 DEG C/h
950~1050 DEG C, soaking time is 2.5~3h, is air-cooled to room temperature.
Before the final heat treatment step, in addition to smelt according to chemical composition and percentage by weight and forging blank,
First heat treatment, roughing, the final heat treatment step also include finishing step afterwards.
The first heat treatment is 2.5~3h in 800~850 DEG C of soaking times for blank is fitted into heat-treatment furnace, it
After cool to room temperature with the furnace.
In the final heat treatment step, it is again loaded into after water quenching in heating furnace, 500 are warming up to 30~50 DEG C/h~
600 DEG C of tempering, are incubated 1~2h, cool to 200~250 DEG C with the furnace, then coming out of the stove is air-cooled to room temperature.
Cutting test is carried out with steel to the cutter of the present invention on lathe, it is 45 steel to be cut material, hardness HB160
~200, cutting speed 20m/min, revolution 1.9r/min, rotary feed 0.3mm, radial feeds 0.024mm, always cut
It is a 5.625mm to cut depth, always cuts long 1.5m, and it is 0.03~0.05mm that wear extent is measured after cutting, than in the prior art
The half of the wear extent of used solid waste crusher cutter will also be lacked.
The present invention uses reheating water quenching again, the final heat treatment mode being tempered afterwards, is especially set in first heating
Put segmented heating, solid waste crusher cutter steel is both reached higher strong hardness, can avoid again due to
The cooling velocity of follow-up water quenching is too high, causes cutter distortion or cracking.Tempering cooling stage after water quenching, and employ segmentation
Formula cools down, and has certain help to the abrasion resistance properties for improving finished product.Laser melting coating forms the technique of alloy coat after heat treatment, enters
One step enhances the anti-wear performance and service life of cutter steel product.Also, the solid waste crusher cutter of the present invention
Specific starting material element composition and proportioning are employed with steel, pin has been done to Si, Mn, Cr, Mo, Co, V content and proportionate relationship
Property is adjusted, so as to ensure that final product obtains required combination property.
Embodiment
With reference to embodiment and comparative example, the present invention is described in more detail.
Embodiment 1：
A kind of final heat treatment method of cutter steel, the cutter are formed with steel raw material comprising following element：C:
0.60%, Si:0.30%, Mn:0.50%, Cr:5.50%, Mo:1.00%, Co:1.00%, Al:0.10%, V:0.10%, P ＜ 0.01%,
S ＜ 0.02%, surplus are Fe and inevitable impurity.The final heat treatment is by the way of sensing heating, by roughing
Cutter afterwards is fitted into induction heater with steel, and 450 DEG C, soaking time 1h are at the uniform velocity warming up in 3h, then with 50 DEG C/
H is continuously heating to 950 DEG C, soaking time 3h, is air-cooled to room temperature, and then reheating is incubated water quenching after 1h, quenched to 850 DEG C
Water is stirred when fiery, is again loaded into after water quenching in heating furnace, 600 DEG C of tempering are warming up to 50 DEG C/h, is incubated 1h, it is cold with stove
But to 250 DEG C, then come out of the stove and be air-cooled to room temperature.Also include cladding coating step after the final heat treatment, will be obtained after tempering
Cutter cleaned with steel after, using laser cladding equipment cutter with steel surface formed alloy coat, coated powder be from
Fusibleness iron(-)base powder, powder size are 100 mesh, and chemical composition includes Cr:10.00%, W:1.00%, B:3.00%, laser melts
Laser power is 2.5kW, sweep speed 300mm/min, powder feeding rate 35mg/min during covering.The final heat treatment
It is described before step, in addition to according to chemical composition and percentage by weight smelting and forging blank, first heat treatment, roughing
Also include finishing step after final heat treatment step.Blank is is fitted into heat-treatment furnace by the first heat treatment, 850
DEG C soaking time is 2.5h, cools to room temperature with the furnace afterwards.The bending strength of the cutter steel product reaches 2500MPa,
Hardness reaches 55HRC.
Embodiment 2：
A kind of final heat treatment method of cutter steel, the cutter are formed with steel raw material comprising following element：C:
0.65%, Si:0.40%, Mn:0.40%, Cr:4.50%, Mo:0.80%, Co:1.30%, Al:0.08%, V:0.06%, P ＜ 0.01%,
S ＜ 0.02%, surplus are Fe and inevitable impurity.The final heat treatment is by the way of sensing heating, by roughing
Cutter afterwards is fitted into induction heater with steel, 420 DEG C is at the uniform velocity warming up in 35h, soaking time 0.5h, then with 60
DEG C/h is continuously heating to 1000 DEG C, soaking time 2.5h, is air-cooled to room temperature, then reheating is incubated water after 1h to 820 DEG C
Quench, water stirred during quenching, be again loaded into after water quenching in heating furnace, 550 DEG C of tempering are warming up to 40 DEG C/h, are incubated 2h,
Cool to 220 DEG C with the furnace, then coming out of the stove is air-cooled to room temperature.Also include cladding coating step after the final heat treatment, will be tempered
After the cutter obtained afterwards is cleaned with steel, alloy coat, coating powder are formed with steel surface in cutter using laser cladding equipment
End is self-fluxing nature iron(-)base powder, and powder size is 150 mesh, and chemical composition includes Cr:12.00%, W:1.50%, B:3.00%,
Laser power is 2.5kW, sweep speed 300mm/min, powder feeding rate 35mg/min in laser cladding process.It is described final
Before heat treatment step, in addition to smelt according to chemical composition and percentage by weight and forging blank, first heat treatment, it is thick plus
Work, the final heat treatment step also include finishing step afterwards.The first heat treatment is that blank is loaded into heat-treatment furnace
In, it is 2.5h in 830 DEG C of soaking times, cools to room temperature with the furnace afterwards.The bending strength of the cutter steel product reaches
2800MPa, hardness reach 65HRC.
Embodiment 3：
A kind of final heat treatment method of cutter steel, the cutter are formed with steel raw material comprising following element：C:
0.70%, Si:0.50%, Mn:0.30%, Cr:3.50%, Mo:0.50%, Co:1.50%, Al:0.05%, V:0.05%, P ＜ 0.01%,
S ＜ 0.02%, surplus are Fe and inevitable impurity.The final heat treatment is by the way of sensing heating, by roughing
Cutter afterwards is fitted into induction heater with steel, and 450 DEG C, soaking time 1h are at the uniform velocity warming up in 4h, then with 80 DEG C/
H is continuously heating to 1050 DEG C, soaking time 3h, is air-cooled to room temperature, and then reheating is incubated water quenching after 2h, quenched to 850 DEG C
Water is stirred when fiery, is again loaded into after water quenching in heating furnace, 600 DEG C of tempering are warming up to 50 DEG C/h, is incubated 2h, it is cold with stove
But to 250 DEG C, then come out of the stove and be air-cooled to room temperature.Also include cladding coating step after the final heat treatment, will be obtained after tempering
Cutter cleaned with steel after, using laser cladding equipment cutter with steel surface formed alloy coat, coated powder be from
Fusibleness iron(-)base powder, powder size are 150 mesh, and chemical composition includes Cr:11.00%, W:2.00%, B:3.50%, laser melts
Laser power is 2.5kW, sweep speed 300mm/min, powder feeding rate 35mg/min during covering.The final heat treatment
It is described before step, in addition to according to chemical composition and percentage by weight smelting and forging blank, first heat treatment, roughing
Also include finishing step after final heat treatment step.Blank is is fitted into heat-treatment furnace by the first heat treatment, 850
DEG C soaking time is 3h, cools to room temperature with the furnace afterwards.The bending strength of the cutter steel product reaches 2650MPa, firmly
Degree reaches 60HRC.
Comparative example 1：
By the cutter steel with elemental composition of the invention same and content, without final heat treatment, or final heat treatment
Mode of heating and step change, then the bending strength of resulting solid waste crusher cutter is significantly lower than 1800MPa,
And after cutting test same as the present application, its anti-wear performance is suitable with prior art products.
Comparative example 2：
The cutter steel raw material of elemental composition and content of the present invention is will differ from, using final heat treatment same as the present application
After prepared by technique, the strong hardness of resulting solid waste crusher cutter is difficult to meet the requirements, also, can also even if hardness
Reach 58HRC, and after cutting test same as the present application, its anti-wear performance is suitable with prior art products.
Comparative example 3：
By the cutter steel with same elemental composition of the invention and content, the process for not using cladding coating after heat treatment
When, the stretch bending strength and hardness of the solid waste crusher cutter obtained by it are difficult to meet combination property requirement, and it is used
Life-span does not improve compared with prior art products.
The elemental composition choosing of waste material crusher cutter steel of the present invention it can be seen from embodiment 1-3 and comparative example 1-3
Select with final heat treatment step process, be that applicant verifies by repeated tests.By reheating water quenching again, it
The final heat treatment mode being tempered afterwards, particularly, in heating segmented heating for the first time, cutter steel are made to have reached preferably strong
Hardness.Tempering employs segmented cooling after water quenching, the anti-wear performance of cutter finished product has also been reached desirable level.After heat treatment
Laser melting coating forms the technique of alloy coat, further enhancing the anti-wear performance and service life of cutter steel product.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (7)
- A kind of 1. solid waste crusher cutter steel, it is characterised in that：The preparation method of the cutter steel is included most Whole heat treatment step, the final heat treatment step are carried out by the way of sensing heating, to the cutter after roughing with steel 950~1050 DEG C are heated to for the first time, soaking time is 2.5~3h, is air-cooled to room temperature, and then reheating is to 800~850 DEG C, Water quenching after 1~2h is incubated, water is stirred during quenching, is again loaded into after water quenching in heating furnace, protected in 500~600 DEG C of tempering 1~2h of temperature, is then air-cooled to room temperature；Also include cladding coating step after the final heat treatment, obtain the cutter steel product afterwards；The bending strength of the finished product reaches 2500~2800MPa, and hardness is up to 55~65HRC.
- 2. cutter steel according to claim 1, it is characterised in that：The cutter includes following member with steel raw material Element composition：C:0.60-0.70%, Si:0.30-0.50%, Mn:0.30-0.50%, Cr:3.50-5.50%, Mo:0.50-1.00%, Co:1.00-1.50%, Al:0.05-0.10%, V:0.05-0.10%, P ＜ 0.01%, S ＜ 0.02%, surplus is for Fe and unavoidably Impurity.
- 3. cutter steel according to claim 1, it is characterised in that：In the cladding coating step, it will be obtained after tempering To cutter cleaned with steel after, alloy coat is formed with steel surface in cutter using laser cladding equipment, coated powder is Self-fluxing nature iron(-)base powder, powder size are 100~150 mesh, and chemical composition includes Cr:10.00~12.00%, W:1.00~ 2.00%, B:3.00~3.50%, laser power is 2.5kW in laser cladding process, sweep speed 300mm/min, powder feeding speed Rate is 35mg/min.
- 4. cutter steel according to claim 1, it is characterised in that：The first heating of the final heat treatment is specific For the cutter after roughing is fitted into induction heater with steel, 400~450 DEG C are at the uniform velocity warming up in 3~5h, insulation Time is 0.5~1h, is then continuously heating to 950~1050 DEG C with 50~80 DEG C/h, soaking time is 2.5~3h, is air-cooled to Room temperature.
- 5. cutter steel according to claim 5, it is characterised in that：Before the final heat treatment step, in addition to Smelted according to chemical composition and percentage by weight and forging blank, first heat treatment, roughing, the final heat treatment step it Also include finishing step afterwards.
- 6. the cutter steel according to claim 1 to 5, it is characterised in that：The first heat treatment is to load blank In heat-treatment furnace, it is 2.5~3h in 800~850 DEG C of soaking times, cools to room temperature with the furnace afterwards.
- 7. the cutter steel according to claim 1 to 6, it is characterised in that：In the final heat treatment step, after water quenching It is again loaded into heating furnace, 500 ~ 600 DEG C of tempering is warming up to 30 ~ 50 DEG C/h, 1 ~ 2h is incubated, cools to 200 ~ 250 DEG C with the furnace, Then come out of the stove and be air-cooled to room temperature.
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| CN201710766643.0A CN107574298B (en) | 2017-08-30 | 2017-08-30 | A kind of solid waste crusher cutter steel |
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|---|---|---|---|
| CN201710766643.0A CN107574298B (en) | 2017-08-30 | 2017-08-30 | A kind of solid waste crusher cutter steel |
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| CN107574298B CN107574298B (en) | 2019-05-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427091A (en) * | 2020-10-14 | 2022-05-03 | 无锡朗贤轻量化科技股份有限公司 | High-wear-resistance die steel product for hot stamping and additive manufacturing process thereof |
| CN115232927A (en) * | 2022-06-22 | 2022-10-25 | 重庆众诚精密模锻有限公司 | High-temperature deformation waste heat treatment method for automobile flange forging |
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