CN104439935A - Bolt manufacturing process - Google Patents
Bolt manufacturing process Download PDFInfo
- Publication number
- CN104439935A CN104439935A CN201410616999.2A CN201410616999A CN104439935A CN 104439935 A CN104439935 A CN 104439935A CN 201410616999 A CN201410616999 A CN 201410616999A CN 104439935 A CN104439935 A CN 104439935A
- Authority
- CN
- China
- Prior art keywords
- stock
- temperature
- punchings
- punching
- furnace
- 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 19
- 238000000034 method Methods 0.000 claims abstract description 16
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 10
- 150000001875 compounds Chemical class 0.000 claims abstract description 5
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000005260 corrosion Methods 0.000 claims abstract description 4
- 230000007797 corrosion Effects 0.000 claims abstract description 4
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 235000006408 oxalic acid Nutrition 0.000 claims abstract description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 4
- 239000010452 phosphate Substances 0.000 claims abstract description 4
- 238000005554 pickling Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000004080 punching Methods 0.000 claims description 45
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 238000007493 shaping process Methods 0.000 claims description 18
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 238000005496 tempering Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910000954 Medium-carbon steel Inorganic materials 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000006227 byproduct Substances 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 210000000981 epithelium Anatomy 0.000 claims description 3
- 229910000765 intermetallic Inorganic materials 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 abstract 3
- 239000002253 acid Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- -1 kirsite Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000003672 processing 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
-
- 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
Abstract
The invention provides a bolt manufacturing process. The process comprises the steps of (a) conducting charging, that is, lifting and placing products to be treated into a furnace, fastening a furnace cover to make the temperature in the furnace rise to a specified temperature within 3-4 hours, maintaining the temperature ranging from 680 DEG C to 715 DEG C for 4-6 hours, lowering the temperature in the furnace to 550 DEG C or below within 3-4 hours, and then cooling the products to the normal temperature along with the temperature of the furnace, and (b) conducting acid pickling, that is, soaking all wire rods into three hydrochloric acid tanks with the concentration ranging from 20% to 25% at normal temperature for several minutes, removing hydrochloric acid corrosion products on the surfaces of the wire rods, soaking the wire rods in oxalic acid for several minutes, and soaking the wire rods into phosphate to enable steel surfaces to make contact with conversion treatment fluid, wherein steel is dissolved to generate insoluble compounds, the compounds are attached to the steel surfaces to form a skin film, and the wire rods are cleaned with clear water and then cut into required blanks through cooperation of an inner cutting die and a shear knife. The bolt manufacturing process is suitable for manufacturing of a large number of bolts; by the adoption of the bolt manufacturing process, the bolts are high in structural strength and toughness.
Description
Technical field
The present invention relates to a kind of screw bolt manufacture process, belong to machinery manufacturing technology field.
Background technology
The nut of existing bolt can adopt cold pier or hot pier technique the method to save material, selects the method for pier according to pier forging machine tonnage size and the diameter of bolt.The turret head of the special or special bolts of small lot is that after turning, milling becomes.Single and mini-batch production can use the method such as threading die mantle fiber, lathe Pick Wire, whirling mill milling.Shank of bolt manufacturing process has cold-drawn and undergauge, so this bolt does not have threaded section diameter not necessarily smaller.When adopting cold-drawn, smaller; When adopting undergauge, can be isometrical or slightly large with screw thread.Bolt material is alloy or the metal of the low melting points such as aluminium alloy, kirsite, copper alloy, also can adopt the method for die cast.Above-described processing method is all suitable for the bolt manufacture of small lot, and is not very applicable for large batch of bolt manufacture.
Summary of the invention
The invention provides a kind of screw bolt manufacture process, be particularly useful for large batch of bolt manufacture, and the bolt quality produced is good, structural strength is high, good toughness.
For solving above technical problem, the invention provides following technical scheme: a kind of screw bolt manufacture process, a, pan feeding: need hang in stove by product to be processed, bell covers tightly, and in-furnace temperature was risen to set point of temperature in 3-4 hour; At 680 DEG C-715 DEG C, keep 4-6h, in-furnace temperature was down to 550 DEG C or following in 3-4 hour, then cools to normal temperature with the furnace; B, pickling: by whole three hydrochloric acid trough numbers minute that normal temperature is immersed respectively in dish unit, concentration is 20-25%; Remove the hcl corrosion product of wire surface, oxalic acid is used to soak several minutes, unit will be coiled and immerse phosphate, steel surface contacts with chemical synthesis treatment liquid, iron and steel dissolves and generates insoluble compound, is attached to steel surface and forms epithelium, then uses clear water cleaning, coordinated with shear knife by interior cutting die, wire rod is cut into required stock; C, a punching: coordinated by front punch die, stroke mould, backlash rod, by cut-out stock uneven for distortion in addition shaping, and released stock by backlash rod; Two punchings: stock from a punching folder to two punchings, is coordinated by front punch die, stroke mould, backlash rod by running folder, further by stock shaping, and stock is released by backlash is excellent after acting on by the pressing strengthening the first punching and full angle; Three punchings: stock from two punching folders to three punchings, is coordinated by front punch die, stroke mould, backlash rod, again extrudes stock by running folder, to make undershoot can be completely shaping, be released by stock afterwards by backlash rod; Four punchings: stock from three punching folders to four punchings, is coordinated by front punch die, stroke mould, backlash rod by running folder, and nut is completely shaping, and mat controls the thickness that iron filings thickness adjusts nut, is released by stock afterwards by backlash rod; Five punchings: stock from four punching folders to five punchings, is coordinated by front punch die, de-charging tray by running folder, by the punching of shaping stock completely, and benevolence under the iron filings thrust being entered punch mould, and finally complete the shaping of nut; The head mark of nut is formed in this process; D, tapping e, the medium carbon steel taking carbon containing higher, carry out tempering after quenching, temperature is 500-650 DEG C, is cooled to room temperature after tempering, and the time of cooling is 10-30m; Bolt being dipped in containing being deposited in the aqueous solution of metallic compound, with electric current by plating solution, plated metal being separated out and is deposited on bolt, completing.
This screw bolt manufacture process that the present invention relates to, be applicable to the manufacture of bolt in enormous quantities, manufacturing process makes the structural strength of bolt high, and toughness is strong.
Detailed description of the invention
A kind of screw bolt manufacture process, a, pan feeding: need hang in stove by product to be processed, bell covers tightly, and in-furnace temperature was risen to set point of temperature in 3-4 hour; At 680 DEG C-715 DEG C, keep 4-6h, in-furnace temperature was down to 550 DEG C or following in 3-4 hour, then cools to normal temperature with the furnace; B, pickling: by whole three hydrochloric acid trough numbers minute that normal temperature is immersed respectively in dish unit, concentration is 20-25%; Remove the hcl corrosion product of wire surface, oxalic acid is used to soak several minutes, unit will be coiled and immerse phosphate, steel surface contacts with chemical synthesis treatment liquid, iron and steel dissolves and generates insoluble compound, is attached to steel surface and forms epithelium, then uses clear water cleaning, coordinated with shear knife by interior cutting die, wire rod is cut into required stock; C, a punching: coordinated by front punch die, stroke mould, backlash rod, by cut-out stock uneven for distortion in addition shaping, and released stock by backlash rod; Two punchings: stock from a punching folder to two punchings, is coordinated by front punch die, stroke mould, backlash rod by running folder, further by stock shaping, and stock is released by backlash is excellent after acting on by the pressing strengthening the first punching and full angle; Three punchings: stock from two punching folders to three punchings, is coordinated by front punch die, stroke mould, backlash rod, again extrudes stock by running folder, to make undershoot can be completely shaping, be released by stock afterwards by backlash rod; Four punchings: stock from three punching folders to four punchings, is coordinated by front punch die, stroke mould, backlash rod by running folder, and nut is completely shaping, and mat controls the thickness that iron filings thickness adjusts nut, is released by stock afterwards by backlash rod; Five punchings: stock from four punching folders to five punchings, is coordinated by front punch die, de-charging tray by running folder, by the punching of shaping stock completely, and benevolence under the iron filings thrust being entered punch mould, and finally complete the shaping of nut; The head mark of nut is formed in this process; D, tapping e, the medium carbon steel taking carbon containing higher, carry out tempering after quenching, temperature is 500-650 DEG C, is cooled to room temperature after tempering, and the time of cooling is 10-30m; Bolt being dipped in containing being deposited in the aqueous solution of metallic compound, with electric current by plating solution, plated metal being separated out and is deposited on bolt, completing.Detailed description of the invention of the present invention does not form the restriction to the application's scope; within every spirit in the present invention's design and principle, any amendment that one of skill in the art can make, equivalent to replace and improvement etc. all should be included within protection scope of the present invention.
Claims (1)
1. a screw bolt manufacture process, is characterized in that: a, pan feeding: need hang in stove by product to be processed, bell covers tightly, and in-furnace temperature was risen to set point of temperature in 3-4 hour; At 680 DEG C-715 DEG C, keep 4-6h, in-furnace temperature was down to 550 DEG C or following in 3-4 hour, then cools to normal temperature with the furnace; B, pickling: by whole three hydrochloric acid trough numbers minute that normal temperature is immersed respectively in dish unit, concentration is 20-25%; Remove the hcl corrosion product of wire surface, oxalic acid is used to soak several minutes, unit will be coiled and immerse phosphate, steel surface contacts with chemical synthesis treatment liquid, iron and steel dissolves and generates insoluble compound, is attached to steel surface and forms epithelium, then uses clear water cleaning, coordinated with shear knife by interior cutting die, wire rod is cut into required stock; C, a punching: coordinated by front punch die, stroke mould, backlash rod, by cut-out stock uneven for distortion in addition shaping, and released stock by backlash rod; Two punchings: stock from a punching folder to two punchings, is coordinated by front punch die, stroke mould, backlash rod by running folder, further by stock shaping, and stock is released by backlash is excellent after acting on by the pressing strengthening the first punching and full angle; Three punchings: stock from two punching folders to three punchings, is coordinated by front punch die, stroke mould, backlash rod, again extrudes stock by running folder, to make undershoot can be completely shaping, be released by stock afterwards by backlash rod; Four punchings: stock from three punching folders to four punchings, is coordinated by front punch die, stroke mould, backlash rod by running folder, and nut is completely shaping, and mat controls the thickness that iron filings thickness adjusts nut, is released by stock afterwards by backlash rod; Five punchings: stock from four punching folders to five punchings, is coordinated by front punch die, de-charging tray by running folder, by the punching of shaping stock completely, and benevolence under the iron filings thrust being entered punch mould, and finally complete the shaping of nut; The head mark of nut is formed in this process; D, tapping e, the medium carbon steel taking carbon containing higher, carry out tempering after quenching, temperature is 500-650 DEG C, is cooled to room temperature after tempering, and the time of cooling is 10-30m; Bolt being dipped in containing being deposited in the aqueous solution of metallic compound, with electric current by plating solution, plated metal being separated out and is deposited on bolt, completing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410616999.2A CN104439935A (en) | 2014-11-06 | 2014-11-06 | Bolt manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410616999.2A CN104439935A (en) | 2014-11-06 | 2014-11-06 | Bolt manufacturing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104439935A true CN104439935A (en) | 2015-03-25 |
Family
ID=52887101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410616999.2A Pending CN104439935A (en) | 2014-11-06 | 2014-11-06 | Bolt manufacturing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104439935A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106914582A (en) * | 2017-03-15 | 2017-07-04 | 温州市强邦实业有限公司 | A kind of axis nut impact extrusion shapes technique |
| CN107695631A (en) * | 2017-10-25 | 2018-02-16 | 苏州华丰不锈钢紧固件有限公司 | A kind of processing and forming technology of screw |
| CN108754348A (en) * | 2018-06-27 | 2018-11-06 | 芜湖金宇紧固件有限公司 | A kind of high-strength screw and its preparation process |
| CN109623269A (en) * | 2018-12-05 | 2019-04-16 | 中山市固耐特金属制品有限公司 | A kind of quick-fried head of anti-CARBURIZING FURNACE FOR STAINLESS FASTENER promotes the processing technology of product precision |
| CN109909690A (en) * | 2019-04-04 | 2019-06-21 | 浙江力友汽车科技有限公司 | A kind of processing technology of gearbox bolt |
| CN111570694A (en) * | 2020-05-21 | 2020-08-25 | 湘潭方舟机械有限公司 | Screw production process with good corrosion resistance |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5627745A (en) * | 1979-08-10 | 1981-03-18 | Toshiba Corp | Manufacturing method of washer and bolt |
| CN101537472A (en) * | 2009-04-10 | 2009-09-23 | 日泰（上海）汽车标准件有限公司 | Bolt processing technic featuring one-step molding |
| CN201455164U (en) * | 2009-04-10 | 2010-05-12 | 日泰（上海）汽车标准件有限公司 | Die for processing one-step forming bolt |
| CN101797685A (en) * | 2010-04-08 | 2010-08-11 | 浙江裕泰紧固件制造有限公司 | Process for manufacturing high-strength bolt |
| CN101934467A (en) * | 2009-06-30 | 2011-01-05 | 江都狮鹤高强度螺栓有限公司 | Machining process of high strength bolt for steel space frame bolted spherical joint |
| CN102152078A (en) * | 2011-03-30 | 2011-08-17 | 浙江迪特高强度螺栓有限公司 | Processing technique for high-strength bolt adopted by bulldozer or excavator pedrail |
-
2014
- 2014-11-06 CN CN201410616999.2A patent/CN104439935A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5627745A (en) * | 1979-08-10 | 1981-03-18 | Toshiba Corp | Manufacturing method of washer and bolt |
| CN101537472A (en) * | 2009-04-10 | 2009-09-23 | 日泰（上海）汽车标准件有限公司 | Bolt processing technic featuring one-step molding |
| CN201455164U (en) * | 2009-04-10 | 2010-05-12 | 日泰（上海）汽车标准件有限公司 | Die for processing one-step forming bolt |
| CN101934467A (en) * | 2009-06-30 | 2011-01-05 | 江都狮鹤高强度螺栓有限公司 | Machining process of high strength bolt for steel space frame bolted spherical joint |
| CN101797685A (en) * | 2010-04-08 | 2010-08-11 | 浙江裕泰紧固件制造有限公司 | Process for manufacturing high-strength bolt |
| CN102152078A (en) * | 2011-03-30 | 2011-08-17 | 浙江迪特高强度螺栓有限公司 | Processing technique for high-strength bolt adopted by bulldozer or excavator pedrail |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106914582A (en) * | 2017-03-15 | 2017-07-04 | 温州市强邦实业有限公司 | A kind of axis nut impact extrusion shapes technique |
| CN107695631A (en) * | 2017-10-25 | 2018-02-16 | 苏州华丰不锈钢紧固件有限公司 | A kind of processing and forming technology of screw |
| CN108754348A (en) * | 2018-06-27 | 2018-11-06 | 芜湖金宇紧固件有限公司 | A kind of high-strength screw and its preparation process |
| CN109623269A (en) * | 2018-12-05 | 2019-04-16 | 中山市固耐特金属制品有限公司 | A kind of quick-fried head of anti-CARBURIZING FURNACE FOR STAINLESS FASTENER promotes the processing technology of product precision |
| CN109909690A (en) * | 2019-04-04 | 2019-06-21 | 浙江力友汽车科技有限公司 | A kind of processing technology of gearbox bolt |
| CN111570694A (en) * | 2020-05-21 | 2020-08-25 | 湘潭方舟机械有限公司 | Screw production process with good corrosion resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |
|
| RJ01 | Rejection of invention patent application after publication |