CN110257616A - A kind of rock tunnel(ling) machine heavy duty hobboing cutter cutter ring - Google Patents
A kind of rock tunnel(ling) machine heavy duty hobboing cutter cutter ring Download PDFInfo
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- CN110257616A CN110257616A CN201910554897.5A CN201910554897A CN110257616A CN 110257616 A CN110257616 A CN 110257616A CN 201910554897 A CN201910554897 A CN 201910554897A CN 110257616 A CN110257616 A CN 110257616A
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- cutter ring
- cutter
- hardness
- ling
- hobboing
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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
-
- 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
-
- 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
- C21D1/32—Soft annealing, e.g. spheroidising
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
-
- 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
- C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Earth Drilling (AREA)
Abstract
The present invention is to provide a kind of rock tunnel(ling) machine heavy duty hobboing cutter cutter rings.Annealing way processing is carried out using Intermediate Frequency Induction Heating Equipment, firstly, production is suitable for cutter ring size inductor, protrudes into cutter ring inner wall interval 5mm~8mm, production cutter ring annealing bracket and lifting platform；Secondly, pinpointing thermometric using laser thermodetector, 700 DEG C of heat preservation 10min of heating temperature, electric current is from 50~100A stepped heating；Thirdly, using heat preservation slow cooling, destressing tempering in 2 hours is then carried out；Last treated cutter ring blade hardness is constant, and wearability is unaffected, and cutter ring hardness is by interior radial direction 45~60HRC of cutter ring blade transition step by step.High-strength tenacity hypereutectoid steel of the present invention makes cutter ring, and increases the diameter of cutter ring, and the corresponding space expanded in knife hub can select heavy load bearings to meet the requirement of bearing capacity；Cutter ring hardness transition step by step after making annealing treatment simultaneously, cutter ring blade has wearability, cutter ring internal diameter has toughness, and tipping is avoided to damage.It is suitable for as hobboing cutter cutter ring application.
Description
Technical field
The present invention relates to rock tunnel(ling) machine hobboing cutters, more particularly to the cutter ring of rock tunnel(ling) machine hobboing cutter.
Background technique
Hobboing cutter bearing capacity deficiency is the main problem of failure in rock tunnel(ling) machine construction.It is rolled when development machine thrust is excessive
The abrasion between rock such as knife cutter ring increases, and the top power of blade and lateral shearing stress easily cause spring sword situation, domestic current hobboing cutter
It is commonly 17 inch and 19 inch hobboing cutters, when thrust is excessive when driving, cutter bearing load increases, and can generate in work a large amount of
Heat deteriorates bearing environment, causes rolling element destruction, oil leak etc..Large-scale load bearings will be selected to increase drivage efficiency.Greatly
Diameter hobboing cutter is also the developing direction of big cross section hard rock TBM.
But bearing load is increased, shield machine thrust will increase, and the bearing capacity of cutter ring just will increase；Therefore to hobboing cutter
The comprehensive performance of cutter ring entirety is more demanding；Selection and heat treatment method wield influence to the performance of cutter ring very big.
Summary of the invention
In order to select heavy load bearings to improve hobboing cutter bearing capacity, the cutter ring after integral quenching is tempered carries out again
Inner ring annealing；Cutter ring hardness ecto-entad reduces transition step by step after annealing, increases being elastically engaged for cutter ring and cutter hub, reduces
Crack initiation tendency avoids tipping, and the present invention provides a kind of rock tunnel(ling) machine heavy duty hobboing cutter cutter rings.The cutter ring is by using height
The production of obdurability hypereutectoid steel, increases the diameter of cutter ring, rationally selects heavy-duty bearing using the space in knife hub, and by cutter ring
Hardness transition step by step after annealing reduces hobboing cutter cutter ring cracking probability；Solving rock tunnel(ling) machine hobboing cutter carrying deficiency cannot add
The technical issues of high thrust, low efficiency.
The solution adopted by the present invention to solve the technical problem is that:
First the preparatory spheroidizing of cutter ring blank is heat-treated, 850 ± 10 DEG C are grilled thoroughly, and are cooled to 500 DEG C with≤40 DEG C/h temperature control and are come out of the stove
It is air-cooled；It is preheated twice after machining using 550 DEG C of vacuum drying oven heating quenching, 850 DEG C；1000~1150 DEG C of oil are cold, hardness after quenching
HRC62~64 are tempered 530~570 DEG C of 2h using vacuum drying oven, and tempering hardness can reach 59~62HRC three times.
Then annealing way processing is carried out using 200KW or more Intermediate Frequency Induction Heating Equipment, firstly, production is suitable for cutter ring
Size inductor protrudes into cutter ring inner wall interval 5mm~8mm, production cutter ring annealing bracket and lifting platform；Secondly, using Laser Measuring
Warm instrument pinpoints thermometric, 700 DEG C of heat preservation 10min of heating temperature, and electric current is from 50~100A stepped heating；Thirdly, slow using heat preservation
It is cold, then carry out destressing tempering in 2 hours；Last treated cutter ring blade hardness is constant, and wearability is unaffected, knife
Enclose the effect that hardness is extended by interior radial direction 45~60HRC of cutter ring blade transition step by step, the micro-crack for preventing surface from being formed to internal diameter.
Preferably, the high-strength tenacity hypereutectoid steel that the cutter ring uses, component content C:0.65~0.75%；Mn≤
0.40%；Si0:7~1.2%；Cr:6.50~7.50%；Mo:1.9~2.5%；V:1.7~2.2%；P≤0.02%；S≤0.02%.
Good effect since the present invention makes cutter ring using the hypereutectoid steel of high-strength tenacity, and increases the diameter of cutter ring, closes
Reason can select heavy load bearings using the space in knife hub to meet the requirement of bearing capacity；Knife after making annealing treatment simultaneously
Hardness transition step by step is enclosed, cutter ring blade has wearability, cutter ring internal diameter has toughness, and Crack prevention extension causes tipping to damage.
Through overtesting, impact test is done in the sampling of internal diameter position, reaches 30J/cm2More than, it is 3 times of cutter ring integral quenching impact flexibility,
The effect that the micro-crack that present treatment technique can prevent surface from being formed is extended to internal diameter；The wearability of cutter ring blade is unaffected.By
In using large diameter disc cutter thrust big, rock breaking capacity is strong, and driving speed is fast, reduces cutter loss, extends cutter life, reduces work
Make cost.It is suitable for as hobboing cutter cutter ring application.
Detailed description of the invention
Fig. 1 is cutter ring cross section Rockwell hardness test point and hardness distribution after intermediate frequency annealing.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.For
For those skilled in the art, it is possible to understand that without departing from the principles and spirit of the present invention can be to these
Embodiment carries out a variety of change, modification, replacement and modification, and the scope of the present invention is defined by the appended.
Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts all
Other embodiments shall fall within the protection scope of the present invention.
According to the figure, first the preparatory spheroidizing of cutter ring blank is heat-treated, 850 ± 10 DEG C are grilled thoroughly, with≤40 DEG C/h temperature control
Be cooled to 500 DEG C come out of the stove it is air-cooled；It is preheated twice after machining using 550 DEG C of vacuum drying oven heating quenching, 850 DEG C；1000~1150 DEG C
Oily cold, hardness HRC62~64 after quenching are tempered 530~570 DEG C of 2h using vacuum drying oven, three times tempering hardness can reach 59~
62HRC。
Then annealing way processing is carried out using 200KW or more Intermediate Frequency Induction Heating Equipment, firstly, production is suitable for cutter ring
Size inductor, inductor width is suitable with cutter ring inside wall height, and 5mm~8mm will be maintained at by protruding into cutter ring inner wall interval, production
Cutter ring annealing bracket and lifting platform；Lifting platform will have rotation function, guarantee entire inner wall soaking by rotation；Secondly, adopting
Thermometric is pinpointed with laser thermodetector, the selection of temperature measuring point is wanted at representational high temperature, and heating and temperature control is protected at 700 DEG C or so
Warm 10min, starting power transmission electric current cannot be excessive, and electric current is from 50~100A stepped heating；Too fast heating is avoided, too fast volume is heated
Expansion is also easy to produce cutter ring and bursts apart phenomenon；Thirdly, using heat preservation slow cooling, destressing tempering in 2 hours is then carried out；Finally pass through
The cutter ring blade hardness of processing is constant, and wearability is unaffected, and cutter ring hardness is by interior radial 45~60HRC of cutter ring blade mistake step by step
It crosses, the effect that the micro-crack for preventing surface from being formed is extended to internal diameter.
The high-strength tenacity mould steel that the cutter ring uses is hypereutectoid steel, component content C:0.65~0.75%；Mn≤
0.40%；Si0:7~1.2%；Cr:6.50~7.50%；Mo:1.9~2.5%；V:1.7~2.2%；P≤0.02%；S≤0.02%.
The cutter ring diameter 534mm.
The hobboing cutter assembly HH926749/HH926710 bearing for inlaying cutter ring.
Embodiment:
The present invention does impact test and reaches 30J/cm through experimental test, internal diameter sampling2More than, it is cutter ring integral quenching impact flexibility
3 times, the wearability of cutter ring blade is unaffected, wearability is unaffected, cutter ring hardness by interior radial cutter ring blade 45~
60HRC transition step by step, the effect that the micro-crack for preventing surface from being formed is extended to internal diameter.
Due to using heavy-duty bearing, bearing bearing capacity is increased.By taking 17,19 inch as an example, the work bearing capacity of hobboing cutter 250~
311KN or so should reach 350KN or more using the bearing load of 21 inch heavy duty hobboing cutters through detecting.
According to building-site Experimental Comparison test data, based on II class and III class rock, two kinds of diameter hobboing cutter major mechanicals
Parameter compares:
Building site one, the previous similar engineering driving speed of Dahuofang TBM bid section compare
Building site two, Guangshui Po Lam
TBM17 inch hobboing cutter, maximum cutterhead thrust 8500KN, 400 meters of monthly average drilling depth, 526.93 meters of highest drilling depth of the moon.
Building site three, Xinjiang Shuan Shan
19 inch hobboing cutters, maximum cutterhead thrust 10000KN, 666.7 meters of monthly average drilling depth, 1127.1 meters of highest drilling depth of the moon.
By the above experimental data infer 21 inch hobboing cutter thrusts increase after, the moon highest drilling depth can increase to 1400 meters or so.
The working principle of the invention:
Cutter ring is the key component of hobboing cutter, and domestic manufacturer's product hardness is controlled in 56~60HRC, and the low cutter ring of hardness is not wear-resisting, firmly
It spends high cutter ring brittleness to increase, when use easily occurs cutter ring and bursts apart, and it is the key factor for enhancing wearability that Disc Cutter Ring Material, which is selected, resistance to
Mill property refers to the intensity of cutter ring Yu rock contact friction, and not necessarily hardness is high for the best material of wearability, wear-resisting, it is desirable that is insertion
Property and friction compliance, the rubbing surface that the bumps of two rubbing surface of formation that can be most fast after exactly honed match, pursue table merely
Surface hardness, material really up to the mark are not easy to merge, and can reduce the wearability of rubbing surface instead.Some producers use phosphorus content 1.2% with
On material, make there are a large amount of carbide in interior tissue, carbide plays the role of enhancing wearability, but material structure easily produces
Raw carbide segregation clustering phenomena, is difficult to improve, increases the brittleness of material by heat treatment；Also as use high speed steel
Material production cutter ring, forgeability is poor, easily generates and cracks in forging process, and therefore, metal pan-like hobboing cutter cutter ring will be examined sufficiently
Consider the selection of material.
Alloys producing is as follows in metal material:
Chromium: the carbide that Cr can be formed in steel can improve the elevated temperature strength and wearability of steel；Harden ability can be improved and tempering is steady
It is qualitative, be conducive to the heat resistance for increasing material,
Molybdenum: carbide former can be improved the high temperature hardness and harden ability of steel, can prevent Austenite Grain Growth, thus carefully
Change crystal grain, reduces temper brittleness.
Vanadium: carbide, the carbide of vanadium make steel have good thermohardening, can refine crystal grain, improve steel
Wearability.
Silicon: being that the displacement very effective element of solution strengthening is carried out to ferrite.
The high-strength tenacity mould steel that the present invention uses is hypereutectoid steel, component content C:0.65~0.75%；Mn≤0.40%；
Si0:7~1.2%；Cr:6.50~7.50%；Mo:1.9~2.5%；V:1.7~2.2%；P≤0.02%；S≤0.02%；In material
Portion organizes existing uniform carbide enhancing wearability, and has ability resistant to high temperatures；Have higher intensity and wearability.
The features of the present invention:
Due to increasing the diameter of cutter ring, rationally using the space in knife hub, the heavy bearing for selecting load bigger, heavy bearing
The bearing capacity for improving hobboing cutter meets the requirement for needing to increase cutterhead thrust driving of different geological conditions.
Due to enhancing hobboing cutter bearing capacity using heavy-duty bearing, rock breaking capacity enhancing, tool change time is reduced, so, it improves
Working efficiency.
Since cutter ring uses the hypereutectoid steel material of high-strength tenacity mould steel, so that hobboing cutter black box obdurability proportion reaches
To optimum state.
Since cutter ring annealing improves the toughness of cutter ring matrix, cutter ring blade hardness is constant, and wearability is unaffected, cutter ring
The effect that hardness is extended by interior radial direction 45~60HRC of cutter ring blade transition step by step, the micro-crack for preventing surface from being formed to internal diameter, institute
To reduce the tearing tendency of cutter ring.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (4)
1. a kind of rock tunnel(ling) machine heavy duty hobboing cutter cutter ring, it is characterized in that: being first heat-treated the preparatory spheroidizing of cutter ring blank, 850
± 10 DEG C are grilled thoroughly, with≤40 DEG C/h temperature control be cooled to 500 DEG C come out of the stove it is air-cooled；After machining using 550 DEG C of vacuum drying oven heating quenching,
850 DEG C preheat twice；1000~1150 DEG C of oil are cold, hardness HRC62~64 after quenching, and are tempered 530~570 DEG C of 2h using vacuum drying oven,
Tempering hardness can reach 59~62HRC three times；Then it is carried out at annealing way using 200KW or more Intermediate Frequency Induction Heating Equipment
Reason protrudes into cutter ring inner wall interval 5mm~8mm firstly, production is suitable for cutter ring size inductor, production cutter ring annealing bracket and
Lifting platform；Secondly, using laser thermodetector pinpoint thermometric, 700 DEG C of heat preservation 10min of heating temperature, electric current from 50~100A step by step
Heating；Thirdly, using heat preservation slow cooling, destressing tempering in 2 hours is then carried out；Last treated cutter ring blade hardness
Constant, wearability is unaffected, and cutter ring hardness prevents surface from being formed by interior radial direction 45~60HRC of cutter ring blade transition step by step
The effect that micro-crack is extended to internal diameter.
2. a kind of rock tunnel(ling) machine heavy duty hobboing cutter cutter ring according to claim 1, it is characterized in that: the height that the cutter ring uses
Obdurability hypereutectoid steel, component content C:0.65~0.75%；Mn≤0.40%；Si0:7~1.2%；Cr:6.50~7.50%；Mo:
1.9~2.5%；V:1.7~2.2%；P≤0.02%；S≤0.02%.
3. a kind of rock tunnel(ling) machine heavy duty hobboing cutter cutter ring according to claim 1, it is characterized in that: the cutter ring diameter
534mm。
4. a kind of rock tunnel(ling) machine heavy duty hobboing cutter cutter ring according to claim 1, it is characterized in that: the rolling for inlaying cutter ring
Knife assembles HH926749/HH926710 bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910554897.5A CN110257616A (en) | 2019-06-25 | 2019-06-25 | A kind of rock tunnel(ling) machine heavy duty hobboing cutter cutter ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910554897.5A CN110257616A (en) | 2019-06-25 | 2019-06-25 | A kind of rock tunnel(ling) machine heavy duty hobboing cutter cutter ring |
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| Publication Number | Publication Date |
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| CN110257616A true CN110257616A (en) | 2019-09-20 |
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| CN201910554897.5A Pending CN110257616A (en) | 2019-06-25 | 2019-06-25 | A kind of rock tunnel(ling) machine heavy duty hobboing cutter cutter ring |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU673660A1 (en) * | 1978-01-31 | 1979-07-15 | Физико-технический институт АН Белорусской ССР | Method of making press moulds |
| CN102517502A (en) * | 2012-01-16 | 2012-06-27 | 株洲钻石钻掘工具有限公司 | Disk-shaped roller cutter ring and manufacture method thereof |
| CN108060353A (en) * | 2017-12-19 | 2018-05-22 | 安徽天重工股份有限公司 | A kind of shield engine disk type hobbing cutter ring alloy |
| CN108728756A (en) * | 2018-06-30 | 2018-11-02 | 中铁工程装备集团隧道设备制造有限公司 | A kind of high-performance hobboing cutter Disc Cutter Ring Material and preparation method thereof |
| CN109082503A (en) * | 2018-08-01 | 2018-12-25 | 黄河科技学院 | A kind of gradient hardness hobboing cutter cutter ring manufacture craft |
-
2019
- 2019-06-25 CN CN201910554897.5A patent/CN110257616A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU673660A1 (en) * | 1978-01-31 | 1979-07-15 | Физико-технический институт АН Белорусской ССР | Method of making press moulds |
| CN102517502A (en) * | 2012-01-16 | 2012-06-27 | 株洲钻石钻掘工具有限公司 | Disk-shaped roller cutter ring and manufacture method thereof |
| CN108060353A (en) * | 2017-12-19 | 2018-05-22 | 安徽天重工股份有限公司 | A kind of shield engine disk type hobbing cutter ring alloy |
| CN108728756A (en) * | 2018-06-30 | 2018-11-02 | 中铁工程装备集团隧道设备制造有限公司 | A kind of high-performance hobboing cutter Disc Cutter Ring Material and preparation method thereof |
| CN109082503A (en) * | 2018-08-01 | 2018-12-25 | 黄河科技学院 | A kind of gradient hardness hobboing cutter cutter ring manufacture craft |
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Application publication date: 20190920 |