CN108167301A - A kind of fastener and its production technology - Google Patents
A kind of fastener and its production technology Download PDFInfo
- Publication number
- CN108167301A CN108167301A CN201810158552.3A CN201810158552A CN108167301A CN 108167301 A CN108167301 A CN 108167301A CN 201810158552 A CN201810158552 A CN 201810158552A CN 108167301 A CN108167301 A CN 108167301A
- Authority
- CN
- China
- Prior art keywords
- fastener
- temperature
- tempering
- screw portion
- nut portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000005516 engineering process Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000005496 tempering Methods 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000010791 quenching Methods 0.000 claims abstract description 15
- 230000000171 quenching effect Effects 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 239000011261 inert gas Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 238000005098 hot rolling Methods 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005242 forging Methods 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 2
- 238000005457 optimization Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002789 length control Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/02—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws divided longitudinally
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/06—Specially-shaped heads
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a kind of fastener and its production technologies, including fastener body, the fastener body includes screw portion and nut portion, the right side of the screw portion is equipped with nut portion, the screw portion is connect with the nut portion by dismountable mode, the nut portion includes inner ring sleeve and exterior ring cap, the inner ring sleeve is set as integrated molding with the exterior ring cap, it is equipped with fixed hole at the center of the inner ring sleeve, the periphery of the screw portion is uniformly equally spaced screw thread.The present invention uses and simplifies effective material, and pass through unique using efficient quenching and tempering process, automation controllable temperature carries out operation heating, improve production efficiency, production cost is reduced, processing error is avoided, entirely through the improvement to traditional handicraft, cost can be saved, improve productivity, while ensure the performance of fastener.
Description
Technical field
The present invention relates to component of machine processing technique field, especially a kind of fastener and its production technology.
Background technology
Fastener is to be fastenedly connected with and apply extremely wide a kind of machine components.Fastener, it is wide using industry
It is general, including the energy, electronics, electric appliance, machinery, chemical industry, metallurgy, mold, hydraulic pressure etc. industry, various machineries, equipment, vehicle,
Above ship, railway, bridge, building, structure, tool, instrument, chemical industry, instrument and articles for use etc., it can be seen that miscellaneous
Fastener is most widely used mechanical basic part.Its feature is that description is various, and performance purposes is different, and standard
Change, seriation, unitized degree are also high.Therefore, also that a kind of fastener of obtained official standard called standard is tight by someone
Firmware or referred to as standard component.
With the rapid development of modernization industry, each production division such as automobile, machinery, building, light industry is to all kinds of fastenings
Part (such as bolt, nut etc.) proposes higher requirement.Particularly in auto industry field, to meet various structural elements
High-performance and light-weighted increasingly stronger requirement, it is high-strength by implementing to the manufacture connection bolt of secure component, nut
Change and lightweight is undoubtedly maximally efficient means.In addition, for the requirement of the various aspects such as weatherability, corrosion resistance, for
Bolt, nut respective performances there has also been more stringent requirements.
However traditional fastener often insufficient strength, and traditional processing technology, pollution it is larger, and production efficiency compared with
It is low, the problem of for more than, herein it is proposed that a kind of fastener and its production technology.
Invention content
The present invention provides a kind of fastener and its production technology for the deficiency in background technology.
The present invention is solves above-mentioned technical deficiency, in order to improve production efficiency and yield rate, provide a kind of fastener and
Its production technology, including fastener body, the fastener body includes screw portion and nut portion, the screw portion
Right side is equipped with nut portion, and the screw portion is connect with the nut portion by dismountable mode, the nut portion
Including inner ring sleeve and exterior ring cap, the inner ring sleeve is set as integrated molding with the exterior ring cap, is set at the center of the inner ring sleeve
There is a fixed hole, the periphery of the screw portion is uniformly equally spaced screw thread.
As present invention further optimization mode, the processing of the fastener body includes the following steps,
S1, raw material steel is subjected to hot rolling, wherein in 1200-1250 DEG C of all heat-treated 1-2h, start rolling temperature is 1000-
1200 DEG C, 800-850 DEG C of finishing temperature, coiling temperature is 700-750 DEG C, and cooling velocity is less than 1.5 DEG C/s；
S2, the steel after hot rolling are processed rate be 15-25% stretch line processing, and will stretch line processing after steel carry out it is cold
The part blank with required shape is processed into, processes to be formed in the part blank privileged site by screw thread rolled thread mode
Screw thread；
S3, the blank in step S2 is subjected to reinforcement deoxidation operation, high alkalinity white slag, the metals such as Zr, Ti, B, rare earth is made in stove
It is added in blank material during element discharging, reduces active element oxidization burning loss, improve recovery rate, and reduce inclusion content；
S4, heating process is carried out to blank material, heating carries out quenching process, then carries out tempering process first；
S5, cleaning：Fash, burr, the riser at removing surface removal die joint and core print are carried out after after the completion of blank material heating
Trace is cut off, is then surface-treated, anti-decaying paint is smeared after the completion of processing, completes processing.
As present invention further optimization mode, the fastener processing length controls 2.3-5.8cm, the fastener
Tensile strength and 5.3% elongation percentage with 1620MPa.
As present invention further optimization mode, after the quenching process is included hereinafter, being processed first to blank material,
Stop forging and austenitizing processing, heat preservation are carried out in temperature range, soaking time is determined according to part effective thickness；Quenching：It will heat preservation
Workpiece afterwards is quickly put into flowing water base suspension hardening media and cools down, and then takes out stop in air, is repeated several times
Above-mentioned cooling and holding process, are carried out at the same time normalizing, put the workpiece in resistance furnace, are kept the temperature under normalizing temperature, and by normalizing
Workpiece afterwards takes out, and is cooled to room temperature in air, and the bulk temperature of quenching is controlled at 1000-1200 DEG C, continues 0.5-1.5h.
As present invention further optimization mode, the tempering process is included hereinafter, first, being reached in tempering heating
Start vaccum-pumping equipment before 200 DEG C to being tempered stove evacuation, remove air；Secondly, when furnace temperature rises to 200 DEG C, indifferent gas is filled
Then body starts circulating fan heating tempering, needs to ensure inert gas pressure in stove in the process into flue>Atmospheric pressure,
And keep stable；Finally, the inert gas of heat is bled off after tempering, then when filling with inert gas is cooled to≤400 DEG C, workpiece
It comes out of the stove air-cooled, tempering process entirety time control is in 1.5-2.5h.
The advantageous effect that is reached of the present invention is：The present invention is simplified from raw material, and using efficient quenching
And tempering process, automation controllable temperature carry out operation heating, improve production efficiency, reduce production cost, avoid processing
Error, entire fastener constructions simplify, and in ruggedized equipment using more convenient, entire processing method is more environmentally friendly, is worth pushing away
Extensively.
Description of the drawings
Fig. 1 is the structure diagram of the fastener body of the present invention；
Fig. 2 is the structure diagram of the nut portion of the present invention.
Such as figure：1- fastener bodies, 2- screw portions, 3- nut portions, 4- inner ring sleeves, 5- exterior ring caps, 6- fixed holes.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
- 2 are please referred to Fig.1, the present invention provides a kind of technical solution：A kind of fastener and its production technology, including fastener
Ontology 1, the fastener body 1 include screw portion 2 and nut portion 3, and the right side of the screw portion 2 is equipped with nut portion
3, the screw portion 2 is connect with the nut portion 3 by dismountable mode, and the nut portion 3 includes 4 He of inner ring sleeve
Exterior ring cap 5, the inner ring sleeve 4 are set as integrated molding with the exterior ring cap 5, are equipped at the center of the inner ring sleeve 4 fixed logical
Hole 6, the periphery of the screw portion 2 are uniformly equally spaced screw thread.
The processing of the fastener body includes the following steps,
S1, raw material steel is subjected to hot rolling, wherein in 1200-1250 DEG C of all heat-treated 1-2h, start rolling temperature is 1000-
1200 DEG C, 800-850 DEG C of finishing temperature, coiling temperature is 700-750 DEG C, and cooling velocity is less than 1.5 DEG C/s；
S2, the steel after hot rolling are processed rate be 15-25% stretch line processing, and will stretch line processing after steel carry out it is cold
The part blank with required shape is processed into, processes to be formed in the part blank privileged site by screw thread rolled thread mode
Screw thread；
S3, the blank in step S2 is subjected to reinforcement deoxidation operation, high alkalinity white slag, the metals such as Zr, Ti, B, rare earth is made in stove
It is added in blank material during element discharging, reduces active element oxidization burning loss, improve recovery rate, and reduce inclusion content；
S4, heating process is carried out to blank material, heating carries out quenching process, then carries out tempering process first；
S5, cleaning：Fash, burr, the riser at removing surface removal die joint and core print are carried out after after the completion of blank material heating
Trace is cut off, is then surface-treated, anti-decaying paint is smeared after the completion of processing, completes processing.
The fastener processing length controls 2.3-5.8cm, tensile strength of the fastener with 1620MPa and
5.3% elongation percentage.
After the quenching process is included hereinafter, being processed first to blank material, austenitizing is carried out stopping forging in temperature range
Processing, heat preservation, soaking time are determined according to part effective thickness；Quenching：Workpiece after heat preservation is quickly put into flowing water base
It is cooled down in suspension hardening media, then takes out stop in air, above-mentioned cooling and holding process is repeated several times, is carried out at the same time
Normalizing is put the workpiece in resistance furnace, is kept the temperature under normalizing temperature, and the workpiece after normalizing is taken out, and is cooled in air
Room temperature, the bulk temperature of quenching are controlled at 1000-1200 DEG C, continue 0.5-1.5h.
The tempering process is included hereinafter, first, starting vaccum-pumping equipment to tempering furnace before tempering heating reaches 200 DEG C
It vacuumizes, removes air；Secondly, when furnace temperature rises to 200 DEG C, then filling with inert gas starts circulating fan heating into flue
Tempering needs to ensure inert gas pressure in stove in the process>Atmospheric pressure, and keep stable；Finally, it is put after tempering
Fall the inert gas of heat, then when filling with inert gas is cooled to≤400 DEG C, workpiece is come out of the stove air-cooled, tempering process entirety time control
In 1.5-2.5h.
Total above-mentioned, the present invention is simplified from raw material, and can using efficient quenching and tempering process, automation
Temperature control carries out operation heating, improves production efficiency, reduces production cost, avoids processing error, entire fastener constructions
It simplifies, in ruggedized equipment using more convenient, entire processing method is more environmentally friendly, is worthy to be popularized.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, 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 to the technical solution recorded in foregoing embodiments or carry out equivalent replacement to which part technical characteristic.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (5)
1. a kind of fastener and its production technology, including fastener body（1）, it is characterised in that：The fastener body（1）Packet
Include screw portion（2）And nut portion（3）, the screw portion（2）Right side be equipped with nut portion（3）, the screw portion
（2）With the nut portion（3）It is connected by dismountable mode, the nut portion（3）Including inner ring sleeve（4）And exterior ring cap
（5）, the inner ring sleeve（4）With the exterior ring cap（5）It is set as integrated molding, the inner ring sleeve（4）Center at be equipped with fix
Through-hole（6）, the screw portion（2）Periphery be uniformly equally spaced screw thread.
2. a kind of fastener according to claim 1 and its production technology, which is characterized in that the fastener body adds
Work includes the following steps,
S1, raw material steel is subjected to hot rolling, wherein in 1200-1250 DEG C of all heat-treated 1-2h, start rolling temperature is 1000-
1200 DEG C, 800-850 DEG C of finishing temperature, coiling temperature is 700-750 DEG C, and cooling velocity is less than 1.5 DEG C/s；
S2, the steel after hot rolling are processed rate be 15-25% stretch line processing, and will stretch line processing after steel carry out it is cold
The part blank with required shape is processed into, processes to be formed in the part blank privileged site by screw thread rolled thread mode
Screw thread；
S3, the blank in step S2 is subjected to reinforcement deoxidation operation, high alkalinity white slag, the metals such as Zr, Ti, B, rare earth is made in stove
It is added in blank material during element discharging, reduces active element oxidization burning loss, improve recovery rate, and reduce inclusion content；
S4, heating process is carried out to blank material, heating carries out quenching process, then carries out tempering process first；
S5, cleaning：Fash, burr, the riser at removing surface removal die joint and core print are carried out after after the completion of blank material heating
Trace is cut off, is then surface-treated, anti-decaying paint is smeared after the completion of processing, completes processing.
3. a kind of fastener according to claim 1 and its production technology, it is characterised in that：The fastener processing length
2.3-5.8cm is controlled, the fastener has the tensile strength and 5.3% elongation percentage of 1620MPa.
4. a kind of fastener according to claim 1 and its production technology, it is characterised in that：The quenching process include with
Under, after being processed first to blank material, austenitizing processing is carried out in temperature range stopping forging, heat preservation, soaking time is according to part
Effective thickness determines；Quenching：Workpiece after heat preservation is quickly put into flowing water base suspension hardening media and is cooled down, Ran Houqu
Go out to stop in air, above-mentioned cooling and holding process is repeated several times, is carried out at the same time normalizing, puts the workpiece in resistance furnace,
It is kept the temperature under normalizing temperature, and the workpiece after normalizing is taken out, be cooled to room temperature in air, the bulk temperature control of quenching exists
1000-1200 DEG C, continue 0.5-1.5h.
5. a kind of fastener according to claim 1 and its production technology, it is characterised in that：The tempering process include with
Under, first, start vaccum-pumping equipment before tempering heating reaches 200 DEG C to being tempered stove evacuation, remove air；Secondly, in stove
When temperature rises to 200 DEG C, then filling with inert gas starts circulating fan heating tempering, needs to ensure in stove in the process into flue
Inert gas pressure>Atmospheric pressure, and keep stable；Finally, the inert gas of heat is bled off after tempering, then fills indifferent gas
When body is cooled to≤400 DEG C, workpiece is come out of the stove air-cooled, and tempering process entirety time control is in 1.5-2.5h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810158552.3A CN108167301A (en) | 2018-02-26 | 2018-02-26 | A kind of fastener and its production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810158552.3A CN108167301A (en) | 2018-02-26 | 2018-02-26 | A kind of fastener and its production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108167301A true CN108167301A (en) | 2018-06-15 |
Family
ID=62510609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810158552.3A Pending CN108167301A (en) | 2018-02-26 | 2018-02-26 | A kind of fastener and its production technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108167301A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111749376A (en) * | 2020-03-31 | 2020-10-09 | 江苏长达特钢制品有限公司 | Production process capable of avoiding falling off connecting claw |
| CN117961447A (en) * | 2024-03-28 | 2024-05-03 | 河北汇中管道装备有限公司 | Bimetal composite tee joint and preparation method thereof |
-
2018
- 2018-02-26 CN CN201810158552.3A patent/CN108167301A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111749376A (en) * | 2020-03-31 | 2020-10-09 | 江苏长达特钢制品有限公司 | Production process capable of avoiding falling off connecting claw |
| CN117961447A (en) * | 2024-03-28 | 2024-05-03 | 河北汇中管道装备有限公司 | Bimetal composite tee joint and preparation method thereof |
| CN117961447B (en) * | 2024-03-28 | 2024-06-18 | 河北汇中管道装备有限公司 | Bimetal composite tee joint and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104439909B (en) | A kind of aluminium alloy wheel hub forging method | |
| KR20120093336A (en) | Method of forming a component of complex shape from sheet material | |
| CN110468360B (en) | Method for reducing quenching residual stress of large-size high-strength aluminum alloy frame die forging | |
| CN104646975A (en) | Wheel rim speed reducer gear ring and manufacturing method thereof | |
| CN108167301A (en) | A kind of fastener and its production technology | |
| CN109280754A (en) | A kind of casting skin hardening and tempering process method for producing CrNiMo alloy steel forging circle | |
| CN106734465A (en) | Based on the hot press-formed method for making automobile B-column of multilayer common metal composite plate | |
| CN101764334B (en) | Die forging method of collector ring fan | |
| CN105316575A (en) | Cold-heading wire for resonance rod and production method thereof | |
| CN208153514U (en) | A kind of fastener | |
| CN112719172A (en) | Forging method of GH80A alloy annular piece | |
| CN1613598A (en) | Manufacture for casting low-alloy cold-working die steel and die steel thereby | |
| CN1670233A (en) | Process for producing cast pieces of spheroidal graphite with high geometrical and dimensional precision and improved mechanical properties | |
| JP4158039B2 (en) | Aluminum alloy pipe manufacturing method | |
| CN104630666A (en) | Heat treatment process of aluminum alloy automobile hub | |
| CN107937666A (en) | A kind of processing method for lifting mould steel and using quality | |
| CN111842748B (en) | Forging method of low-plasticity steel forging | |
| KR102121460B1 (en) | Casting Process Including Double Dip Process | |
| JPH06248402A (en) | Production of member made of magnesium alloy | |
| CN111778460B (en) | Method for improving indentation defect of high-quality aluminum alloy round ingot casting through soaking treatment | |
| CN108942106A (en) | A kind of production and processing method of aluminium set cylinder | |
| CN112222787B (en) | Gear manufacturing method | |
| CN114990316B (en) | Heat treatment method for main shaft of wind generating set | |
| JPH11254077A (en) | Manufacture of die of high strength and high toughness | |
| CN113681237A (en) | Continuous friction weak standard welding method for ultrahigh-strength steel large-scale workpiece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |