CN105508144A - Small generation device - Google Patents

Small generation device Download PDF

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Publication number
CN105508144A
CN105508144A CN201510913391.0A CN201510913391A CN105508144A CN 105508144 A CN105508144 A CN 105508144A CN 201510913391 A CN201510913391 A CN 201510913391A CN 105508144 A CN105508144 A CN 105508144A
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CN
China
Prior art keywords
wind
electricity generation
powered electricity
sprocket wheel
small
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Pending
Application number
CN201510913391.0A
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Chinese (zh)
Inventor
郭策
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Individual
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Individual
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Filing date
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Application filed by Individual filed Critical Individual
Priority to CN201510913391.0A priority Critical patent/CN105508144A/en
Publication of CN105508144A publication Critical patent/CN105508144A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
    • 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
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • 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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/20—Carburising
    • C23C8/22—Carburising of ferrous surfaces
    • 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
    • C21D2211/005—Ferrite
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

The invention relates to a small generation device, and belongs to the field of wind energy and hydroelectric generation. In a region which has certain hydro-power resources and does not achieve the condition for constructing large hydroelectric power plants, the wind energy and water power are fully utilized at the same time through arranging the generation device which has a specific structure and makes combined use of wind power and water power; and besides, through a miniaturization design, the generation device can be conveniently arranged in a proper position, and the purpose of reasonably utilizing clean energy is achieved.

Description

A kind of small-sized electric generating apparatus
Technical field
The invention belongs to field of new energy generation, particularly relate to the small-sized electric generating apparatus of a kind of wind-powered electricity generation and water power combination.
Background technique
At present Central and Western China energetically at development wind-powered electricity generation, also greatly developing water generating in the area that water resource is abundant simultaneously, but the impact that above-mentioned wind-power electricity generation and water generating are subject to geographical environment is very large, thus cause the area not meeting above-mentioned condition not carry out wind-force and/or water generating, although but due to some area water project situation be not be applicable to very much building of massive water projects, still there is certain water conservancy advantage.If relatively little hydroelectric power generating apparatus can be arranged in these areas, then can make full use of these water resources, at least can meet the electricity consumption of certain area, thus reduce the waste of the resources such as long distance power transmission.But there is the water yield relatively less (cause potential difference less) in the water resource due to the type, and sometimes can there is the appearance of cutout phenomenon, and if supporting the problem that small wind facility solves interim cutout or delivery deficiency is set, then environment through moisture makes wind power equipment easily cause damage.Therefore be badly in need of at water resource, invention is a kind of can not be that good area arranges wind-powered electricity generation and water power integrated application and wind power equipment is not subject to the device of wet environment impact relatively.
Summary of the invention
The object of the invention is to propose a kind of small-sized electric generating apparatus.
Realize especially by following technological means:
A kind of small-sized electric generating apparatus, comprise small-sized fan blade, wind power bearing, wind-powered electricity generation drive chain, wind-powered electricity generation sprocket wheel, inlet culvert, water outlet culvert, small hydraulic turbine impeller, water power drive chain and generator set, described wind-powered electricity generation drive chain connects the wind-powered electricity generation sprocket wheel and generator set that are arranged on fan shaft, the drive electrical generators group rotation work along with the rotation of small-sized fan blade; Described water power drive chain connects axle and the generator set of small hydraulic turbine impeller, the drive electrical generators group rotation work along with the rotation of small hydraulic turbine impeller.
The material of wherein said wind-powered electricity generation sprocket wheel by mass percentage content is counted: C:0.12 ~ 0.18%%, Si:0.10 ~ 0.32%, Mn:1.3 ~ 1.5%, Cr:1.68 ~ 2.26%, Mo:0.5 ~ 0.8%, Ni:1.28 ~ 2.08%, Nb:0.01 ~ 0.03%, W:0.02 ~ 0.05%, Pr:0.03 ~ 0.06%, P<0.02%, S<0.01%, surplus is Fe and inevitable impurity.
In the microstructure of described wind-powered electricity generation sprocket wheel, the volume percent content of ferrite and pearlite is 66 ~ 82%, and wherein the volume percent content of ferrite in the two is 81 ~ 88%.
Described wind-powered electricity generation sprocket wheel carries out twice Carburization Treatment, first time carburizing is carry out under the atmosphere of 0.8 ~ 0.9% at carbon potential, first time, carburization processing time was 26 ~ 35 hours, and second time carburizing is carry out under the atmosphere of 0.9 ~ 1.0% at carbon potential, and second time carburization processing time is 1 ~ 5 hour.
Described wind-powered electricity generation sprocket wheel after Carburization Treatment through following heat treatment step:
(1) the wind-powered electricity generation sprocket wheel semi-finished product after Carburization Treatment are directly inserted in quenching oil be chilled to 530 ~ 560 DEG C after pull water spray out and be chilled to room temperature.
(2) semi-finished product that step (1) obtains are placed in tempering furnace are warming up to 360 ~ 390 DEG C, air cooling of coming out of the stove after insulation 25 ~ 50min.
(3) semi-finished product that step (2) obtains are placed in deep cooling box are cooled to-80 ~-110 DEG C, go out deep cooling box after insulation 10 ~ 20min and return to room temperature.
(4) inserted in tempering furnace by the semi-finished product that step (3) obtains and be warming up to 160 ~ 210 DEG C, after insulation 20 ~ 30min, stove is chilled to room temperature.
(5) wind-powered electricity generation sprocket wheel finished product is obtained after surface treatment.
effect of the present invention is.
1, by arranging wind-powered electricity generation and water power fusing device, but make to be not enough to build at water resource the area that large hydropower station also has certain water resource can generate electricity by its water resource of Appropriate application, wind-power electricity generation supplements, thus meets the electricity needs in certain area.
2, in such area in time there is the water yield little or Intermittent blockage, only employing wind-power electricity generation also can ensure certain generated energy, thus avoids the problem causing generated energy significantly to reduce due to the stoppage in transit of water power device; Simultaneously because the environment in such area is moister, the wind power gear (or wind-powered electricity generation sprocket wheel) of existing routine is easy to cause degradation problem under corrosion or intensity under such circumstances, the application, by improving the constituent content of wind-powered electricity generation sprocket wheel and preparation process, makes the ability of its water resistant profit corrosion be largely increased and intensity is improved.
3, by the improvement to wind-powered electricity generation sprocket wheel microstructure and carburization process, make wind-powered electricity generation sprocket wheel when little amplitude increases cost, water-fast corrosivity and surface hardness get a promotion; By the improvement to heat treating regime, especially cryogenic treatment, the intensity of this wind-powered electricity generation sprocket wheel is promoted greatly, thus the Integral lifting durability of wind power components.
Embodiment
embodiment 1
A kind of small-sized electric generating apparatus, comprise small-sized fan blade, wind power bearing, wind-powered electricity generation drive chain, wind-powered electricity generation sprocket wheel, inlet culvert, water outlet culvert, small hydraulic turbine impeller, water power drive chain and generator set, described wind-powered electricity generation drive chain connects the wind-powered electricity generation sprocket wheel and generator set that are arranged on fan shaft, the drive electrical generators group rotation work along with the rotation of small-sized fan blade; Described water power drive chain connects axle and the generator set of small hydraulic turbine impeller, the drive electrical generators group rotation work along with the rotation of small hydraulic turbine impeller.
The material of wherein said wind-powered electricity generation sprocket wheel by mass percentage content is counted: C:0.16%%, Si:0.22%, Mn:1.35%, Cr:1.96%, Mo:0.6%, Ni:1.66%, Nb:0.02%, W:0.035%, Pr:0.05%, P:0.012%, S:0.002%, surplus is Fe and inevitable impurity.
In the microstructure of described wind-powered electricity generation sprocket wheel, the volume percent content of ferrite and pearlite is 68%, and wherein the volume percent content of ferrite in the two is 86%.
Described wind-powered electricity generation sprocket wheel carries out twice Carburization Treatment, and first time carburizing is carry out under the atmosphere of 0.85% at carbon potential, and carburization processing time is 28 hours for the first time, and second time carburizing is carry out under the atmosphere of 0.96% at carbon potential, and second time carburization processing time is 3 hours.
Described wind-powered electricity generation sprocket wheel after Carburization Treatment through following heat treatment step.
(1) the wind-powered electricity generation sprocket wheel semi-finished product after Carburization Treatment are directly inserted in quenching oil be chilled to 552 DEG C after pull water spray out and be chilled to room temperature.
(2) semi-finished product that step (1) obtains are placed in tempering furnace are warming up to 380 DEG C, air cooling of coming out of the stove after insulation 36min.
(3) semi-finished product that step (2) obtains are placed in deep cooling box are cooled to-92 DEG C, go out deep cooling box after insulation 18min and return to room temperature.
(4) inserted in tempering furnace by the semi-finished product that step (3) obtains and be warming up to 182 DEG C, after insulation 25min, stove is chilled to room temperature.
(5) wind-powered electricity generation sprocket wheel finished product is obtained after surface treatment.
embodiment 2
A kind of small-sized electric generating apparatus, comprise small-sized fan blade, wind power bearing, wind-powered electricity generation drive chain, wind-powered electricity generation sprocket wheel, inlet culvert, water outlet culvert, small hydraulic turbine impeller, water power drive chain and generator set, described wind-powered electricity generation drive chain connects the wind-powered electricity generation sprocket wheel and generator set that are arranged on fan shaft, the drive electrical generators group rotation work along with the rotation of small-sized fan blade; Described water power drive chain connects axle and the generator set of small hydraulic turbine impeller, the drive electrical generators group rotation work along with the rotation of small hydraulic turbine impeller.
The material of wherein said wind-powered electricity generation sprocket wheel by mass percentage content is counted: C:0.15%%, Si:0.11%, Mn:1.38%, Cr:2.20%, Mo:0.52%, Ni:2.01%, Nb:0.013%, W:0.029%, Pr:0.036%, P:0.012%, S:0.006%, surplus is Fe and inevitable impurity.
In the microstructure of described wind-powered electricity generation sprocket wheel, the volume percent content of ferrite and pearlite is 81%, and wherein the volume percent content of ferrite in the two is 86%.
Described wind-powered electricity generation sprocket wheel carries out twice Carburization Treatment, and first time carburizing is carry out under the atmosphere of 0.9% at carbon potential, and carburization processing time is 31 hours for the first time, and second time carburizing is carry out under the atmosphere of 1.0% at carbon potential, and second time carburization processing time is 2 hours.
Described wind-powered electricity generation sprocket wheel after Carburization Treatment through following heat treatment step.
(1) the wind-powered electricity generation sprocket wheel semi-finished product after Carburization Treatment are directly inserted in quenching oil be chilled to 550 DEG C after pull water spray out and be chilled to room temperature.
(2) semi-finished product that step (1) obtains are placed in tempering furnace are warming up to 366 DEG C, air cooling of coming out of the stove after insulation 31min.
(3) semi-finished product that step (2) obtains are placed in deep cooling box are cooled to-82 DEG C, go out deep cooling box after insulation 12min and return to room temperature.
(4) inserted in tempering furnace by the semi-finished product that step (3) obtains and be warming up to 166 DEG C, after insulation 25min, stove is chilled to room temperature.
(5) wind-powered electricity generation sprocket wheel finished product is obtained after surface treatment.

Claims (2)

1. a small-sized electric generating apparatus, comprise small-sized fan blade, wind power bearing, wind-powered electricity generation drive chain, wind-powered electricity generation sprocket wheel, inlet culvert, water outlet culvert, small hydraulic turbine impeller, water power drive chain and generator set, it is characterized in that, described wind-powered electricity generation drive chain connects the wind-powered electricity generation sprocket wheel and generator set that are arranged on fan shaft, the drive electrical generators group rotation work along with the rotation of small-sized fan blade; Described water power drive chain connects axle and the generator set of small hydraulic turbine impeller, the drive electrical generators group rotation work along with the rotation of small hydraulic turbine impeller;
The material of wherein said wind-powered electricity generation sprocket wheel by mass percentage content is counted: C:0.12 ~ 0.18%%, Si:0.10 ~ 0.32%, Mn:1.3 ~ 1.5%, Cr:1.68 ~ 2.26%, Mo:0.5 ~ 0.8%, Ni:1.28 ~ 2.08%, Nb:0.01 ~ 0.03%, W:0.02 ~ 0.05%, Pr:0.03 ~ 0.06%, P<0.02%, S<0.01%, surplus is Fe and inevitable impurity;
In the microstructure of described wind-powered electricity generation sprocket wheel, the volume percent content of ferrite and pearlite is 66 ~ 82%, and wherein the volume percent content of ferrite in the two is 81 ~ 88%;
Described wind-powered electricity generation sprocket wheel carries out twice Carburization Treatment, first time carburizing is carry out under the atmosphere of 0.8 ~ 0.9% at carbon potential, first time, carburization processing time was 26 ~ 35 hours, and second time carburizing is carry out under the atmosphere of 0.9 ~ 1.0% at carbon potential, and second time carburization processing time is 1 ~ 5 hour.
2. small-sized electric generating apparatus according to claim 1, is characterized in that, described wind-powered electricity generation sprocket wheel after Carburization Treatment through following heat treatment step:
(1) the wind-powered electricity generation sprocket wheel semi-finished product after Carburization Treatment are directly inserted in quenching oil be chilled to 530 ~ 560 DEG C after pull water spray out and be chilled to room temperature;
(2) semi-finished product that step (1) obtains are placed in tempering furnace are warming up to 360 ~ 390 DEG C (preferably 380 DEG C), air cooling of coming out of the stove after insulation 25 ~ 50min;
(3) semi-finished product that step (2) obtains are placed in deep cooling box are cooled to-80 ~-110 DEG C, go out deep cooling box after insulation 10 ~ 20min and return to room temperature;
(4) inserted in tempering furnace by the semi-finished product that step (3) obtains and be warming up to 160 ~ 210 DEG C, after insulation 20 ~ 30min, stove is chilled to room temperature;
(5) wind-powered electricity generation sprocket wheel finished product is obtained after surface treatment.
CN201510913391.0A 2015-12-12 2015-12-12 Small generation device Pending CN105508144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510913391.0A CN105508144A (en) 2015-12-12 2015-12-12 Small generation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510913391.0A CN105508144A (en) 2015-12-12 2015-12-12 Small generation device

Publications (1)

Publication Number Publication Date
CN105508144A true CN105508144A (en) 2016-04-20

Family

ID=55716374

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510913391.0A Pending CN105508144A (en) 2015-12-12 2015-12-12 Small generation device

Country Status (1)

Country Link
CN (1) CN105508144A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004083476A1 (en) * 2003-03-20 2004-09-30 Sumitomo Metal Industries, Ltd. Stainless steel for high pressure hydrogen gas, vessel and equipment comprising the steel
CN2937544Y (en) * 2006-06-15 2007-08-22 巫明茂 Ocean comprehesvie energy generating equipment
CN200964923Y (en) * 2006-10-23 2007-10-24 张殿辉 Water power and wind power utilization device
CN101984139A (en) * 2010-11-30 2011-03-09 江苏丰东热技术股份有限公司 Carburizing method for wind power gear used for wind power generation
WO2011047546A1 (en) * 2009-10-22 2011-04-28 Chen Hong Wind generator with water float sail
CN103290419A (en) * 2013-06-25 2013-09-11 清华大学 Gear treatment method
CN103624507A (en) * 2013-12-10 2014-03-12 李晓宇 Method for manufacturing chain wheel

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004083476A1 (en) * 2003-03-20 2004-09-30 Sumitomo Metal Industries, Ltd. Stainless steel for high pressure hydrogen gas, vessel and equipment comprising the steel
CN2937544Y (en) * 2006-06-15 2007-08-22 巫明茂 Ocean comprehesvie energy generating equipment
CN200964923Y (en) * 2006-10-23 2007-10-24 张殿辉 Water power and wind power utilization device
WO2011047546A1 (en) * 2009-10-22 2011-04-28 Chen Hong Wind generator with water float sail
CN101984139A (en) * 2010-11-30 2011-03-09 江苏丰东热技术股份有限公司 Carburizing method for wind power gear used for wind power generation
CN103290419A (en) * 2013-06-25 2013-09-11 清华大学 Gear treatment method
CN103624507A (en) * 2013-12-10 2014-03-12 李晓宇 Method for manufacturing chain wheel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
钱刚等: "R4级海洋系泊链φ140mm圆钢的开发", 《特殊钢》 *

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Application publication date: 20160420