CN109482794A - A kind of forging processing method of locking bolt - Google Patents
A kind of forging processing method of locking bolt Download PDFInfo
- Publication number
- CN109482794A CN109482794A CN201811132515.1A CN201811132515A CN109482794A CN 109482794 A CN109482794 A CN 109482794A CN 201811132515 A CN201811132515 A CN 201811132515A CN 109482794 A CN109482794 A CN 109482794A
- Authority
- CN
- China
- Prior art keywords
- forging
- locking bolt
- processing method
- blank
- flaw detection
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- 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
Abstract
The invention discloses a kind of forging processing methods of locking bolt, it is characterized by: increasing a distortion technique after trimming technology, specifically comprise the following steps: pretreatment → blanking → heating → blocking → base → molding → trimming → distortion → heat treatment → detection → removing surface → flaw detection.By Duplex treatment, it not only ensure that the clean degree on forging surface, also effectively avoid when softening to forging, due to instantaneous high-temperature, forging external morphology is caused to damage, the quality of forging is effectively ensured, and after the completion of forging, it is detected and is surface-treated, the quality of forging products is further improved, the complexity coefficient of forging is reduced, reduces the manufacture difficulty of mold, drop is suitble to be widely used to promote for cost.
Description
Technical field
The invention belongs to precision forging field shaping techniques, more particularly, to a kind of forging processing method of locking bolt.
Background technique
Currently, in forging industry, for complex-shaped forging, the optimization of technique can become from complexity it is simple or compared with
Simply, reasonable technique can make production more smooth, and product quality is easy to get guarantee.For complicated locking bolt forge piece,
-- -- -- -- -- polishing -- shot-peening -- issues base currently used process route: blanking for trimming for molding for heating；It is multiple for shape
For miscellany forging, often different thinkings has different technique, and different technique just has different mold design, often occurs
The result is that cutting both ways.Such as in mould-dividing mode, mould substitution solid is divided to divide mould using plane, so that it may it is complicated to reduce forging
Coefficient reduces mold manufacture difficulty, reduces cost.For complex-shaped forging difficulty carry out substep neutralizing, make forging by
Complexity develops to simple direction.Since the product requirement of the locking bolt forge piece of this kind of complexity is higher, difficulty is larger, therefore uses work
Forging is easy to accomplish after skill optimization.
Therefore, it is necessary to develop, a kind of simple process, at low cost, materials are few, time saving and energy saving and high product quality is suitble to
In the forging processing method of the locking bolt of complicated forge piece.
Summary of the invention
The invention solves another technical problem be to provide that a kind of simple process, at low cost, materials are few, time saving province
The forging processing method of power and the high locking bolt for being suitable for complicated forge piece of product quality.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of forging processing method of locking bolt is being cut
After the technique of side increase a distortion technique, specifically comprise the following steps: pretreatment → blanking → heating → blocking → base → at
Type → trimming → distortion → heat treatment → detection → removing surface → flaw detection, specific process are as follows:
S1: pretreatment chooses the round steel forging for needing to forge, and the impurity on forging surface is polished by grinding device,
The impurity on forging surface can be removed, to guarantee the quality in forging process, is then carried out the forging after polishing multiple
Cleaning, it is spare after drying；
S2: pre- upsetting base is heated in blanking: by band sawing machine to round steel blanking, by under round steel at rodlike lower materials and parts, the ruler of lower materials and parts
Very little specification is φ 205-210*155-160mm；
S3: by machine automatization feeding device high-frequency induction furnace is added in lower materials and parts by heating, and heating temperature is 1000 ± 50
DEG C, friction feeding；
S4: blocking, the lower materials and parts after heating are carried out jumping-up, are formed using 1000T hydraulic press, lower materials and parts are first put into first pressure
Under machine on heading, press machine applies under pressure, and upper heading pushes, and carries out generation when material diversion removes heating simultaneously to lower materials and parts
Oxide skin, obtain both ends to be among arc umbrella head be the pre- upsetting blank that disk and head are connected with disk by cylinder；
S5: pre- upsetting blank is put into hotdie forging press by base, and the arc umbrella head at pre- upsetting blank both ends is made in taper die
Reduced with lower diameter, cuts down the formation blank of one end of intermediate disc；
S6: molding trimming: material base is put into rough forge type chamber and carries out rough forge, then blows off oxide skin, then material base is put into finish forge
Finish forge is at blank in type chamber, and the blank trimming for still having residual temperature is then formed target forging, when trimming slab temperature be 700 ±
50°；
S7: distortion distorts blank, and the angle of distortion is 45 ± 5 °, then again successively through over carburizing and heat treatment process,
It obtains distorting molding workpiece；
S8: heat treatment is quenched the blank after distortion, to be tempered room temperature again air-cooled；
S9: detection is tested to forging inside, after the completion of detection, is placed it in processing pond, and add table into processing pond
Surface treatment liquid is surface-treated forging under conditions of 60-80 DEG C, and the time being surface-treated is 60-90min；
S10: removing surface, will distort molding workpiece successively by machining polishing and shot-peening, it is described polishing include circle mill and
Chamfering polishing, shot-peening is then that forging is put into deburring in shot-blasting machine, then sprays isolation lacquer, arrives essence after its drying
The forging products really forged；
S11: flaw detection first sprays magnetic flaw detection ink, then carries out magnetic spy, and be repeated twice, and finally demagnetization obtains finished product;
A further improvement of the present invention is that: in the S8 step, guarantee forging as far as possible most before entering hardening media when quenching
Large scale direction is vertical with the holding of hardening media upper surface.
A further improvement of the present invention is that: in the S8 step, after specification required for forging, quenching uses 1050-
1100 DEG C of oil are cold, and tempering uses 200-300 DEG C of slow cooling.
A further improvement of the present invention is that: in the flaw detection step of the S11, in forging surface even application magnetic flaw detection ink,
Then forging is placed in 100-150 DEG C of environment, is detected using magnetic spy instrument to forging inside, to guarantee the matter of forging
It measures, after the completion of magnetic spy, the magnetic flaw detection ink on forging surface is removed, has using supersonic detector to forging inside do not damage again again
Secondary detection.
A further improvement of the present invention is that: the magnetic flaw detection ink be oiliness fluorescentmagnetic particle(powder), tasteless kerosene, fluxing agent and
The mixed liquor of surfactant, and oiliness fluorescentmagnetic particle(powder), tasteless kerosene, fluxing agent and surfactant molal weight ratio be
1:0.5:0.1:0.1.
A further improvement of the present invention is that: before the S8 step heat treatment step, Carburization Treatment is also carried out to forging,
Carburized (case) depth is 0.2-0.4mm, and infiltration area surface hardness is 50-60HRC.
A further improvement of the present invention is that: the technique for grinding in the S9 step is peripheral milling, and circle mill diameter is 5-
8mm forms peripheral milling part.
A further improvement of the present invention is that: the surface treatment liquid in the S9 is hydrochloric acid, tannic acid, zinc nitrate, complexing
The mixed liquor of agent and surfactant.
A further improvement of the present invention is that: in the surface treatment liquid, hydrochloric acid, tannic acid, zinc nitrate, complexing agent and
The molal weight ratio of surfactant is 1:1:1:0.1:0.1.
Compared with prior art, the beneficial effects of the present invention are: the present invention passes through a hot forging, cold pressing composite molding work
Skill, base process are a hot forging processes, and distortion process is cold forming process, integrally formed locking bolt has been made, the forging technology
Before softening to forging, forging is cleared up and is preheated, by Duplex treatment, not only ensure that the clean of forging surface
Degree, also effectively avoids when softening to forging, due to instantaneous high-temperature, causes to damage to forging external morphology, forging is effectively ensured
Quality.Using the technique after the optimization, makes complicated forging part be easier to realize, save material and manpower, it is time saving and energy saving, together
When save the occupancy of equipment, be suitable for complicated forge piece, be suitable for being widely used to promote.
Specific embodiment
The present invention is described further by the following example: according to following embodiments, the present invention may be better understood.
However, as it will be easily appreciated by one skilled in the art that specific method condition and its result described in embodiment are merely to illustrate
The present invention, without the present invention described in detail in claims should will not be limited.
Embodiment 1:
A kind of forging processing method of locking bolt increases a distortion technique after trimming technology, specifically comprises the following steps: pre- place
Reason → blanking → heating → blocking → base → molding → trimming → distortion → heat treatment → detection → removing surface → flaw detection, tool
Body process is as follows:
S1: pretreatment chooses the round steel forging for needing to forge, and the impurity on forging surface is polished by grinding device,
The impurity on forging surface can be removed, to guarantee the quality in forging process, is then carried out the forging after polishing multiple
Cleaning, it is spare after drying；
S2: pre- upsetting base is heated in blanking: by band sawing machine to round steel blanking, by under round steel at rodlike lower materials and parts, the ruler of lower materials and parts
Very little specification is φ 205-0*155mm；
S3: by machine automatization feeding device high-frequency induction furnace is added in lower materials and parts by heating, and heating temperature is 1000 ± 50
DEG C, friction feeding improves throughput rate；
S4: blocking, the lower materials and parts after heating are carried out jumping-up, are formed using 1000T hydraulic press, lower materials and parts are first put into first pressure
Under machine on heading, press machine applies under pressure, and upper heading pushes, and carries out generation when material diversion removes heating simultaneously to lower materials and parts
Oxide skin, obtain both ends to be among arc umbrella head be the pre- upsetting blank that disk and head are connected with disk by cylinder, mention
The finish on high forging surface increases structural strength；
S5: pre- upsetting blank is put into hotdie forging press by base, and the arc umbrella head at pre- upsetting blank both ends is made in taper die
Reduced with lower diameter, cuts down the formation blank of one end of intermediate disc；
S6: molding trimming: material base is put into rough forge type chamber and carries out rough forge, then blows off oxide skin, then material base is put into finish forge
Finish forge is at blank in type chamber, and the blank trimming for still having residual temperature is then formed target forging, when trimming slab temperature be 700 ±
50°；
S7: distortion distorts blank, and the angle of distortion is 45 ± 5 °, then again successively through over carburizing and heat treatment process,
It obtains distorting molding workpiece；
S8: heat treatment is quenched the blank after distortion, to be tempered room temperature again air-cooled；
S9: detection is tested to forging inside, after the completion of detection, is placed it in processing pond, and add table into processing pond
Surface treatment liquid is surface-treated forging under conditions of 60-80 DEG C, and the time being surface-treated is 60-90min；
S10: removing surface, will distort molding workpiece successively by machining polishing and shot-peening, it is described polishing include circle mill and
Chamfering polishing, shot-peening is then that forging is put into deburring in shot-blasting machine, then sprays isolation lacquer, improves any surface finish of forging
Degree, to get to the forging products accurately forged after its drying；
S11: flaw detection first sprays magnetic flaw detection ink, then carries out magnetic spy, and be repeated twice, it is ensured that forging is flawless, and finally demagnetization obtains
Finished product;
Before the S8 step heat treatment step, Carburization Treatment, carburized (case) depth 0.3mm, infiltration area table are also carried out to forging
Surface hardness is 55HRC.Wherein in the S8 step, guarantee forging full-size direction as far as possible before entering hardening media when quenching
Vertical with the holding of hardening media upper surface, quenching is cold using 1075 DEG C of oil, and tempering uses 250 DEG C of slow cooling.
Surface treatment liquid in the S9 is the mixing of hydrochloric acid, tannic acid, zinc nitrate, complexing agent and surfactant
Liquid.In the surface treatment liquid, hydrochloric acid, tannic acid, zinc nitrate, complexing agent and surfactant molal weight ratio be 1:1:
1:0.1:0.1.Technique for grinding in the S10 step is peripheral milling, and circle mill diameter is 6mm, forms peripheral milling part.
In the flaw detection step of the S11, in forging surface even application magnetic flaw detection ink, then forging is placed in 120 DEG C of ring
It in border, is detected using magnetic spy instrument to forging inside, to guarantee the quality of forging, after the completion of magnetic spy, by forging surface
Magnetic flaw detection ink is removed, and is had not damage to forging inside using supersonic detector again and be detected again.The magnetic flaw detection ink is oiliness
Fluorescentmagnetic particle(powder), tasteless kerosene, fluxing agent and surfactant mixed liquor, and oiliness fluorescentmagnetic particle(powder), tasteless kerosene, fluxing agent
And the molal weight ratio of surfactant is 1:0.5:0.1:0.1.
Compared with prior art, the beneficial effects of the present invention are: the present invention passes through a hot forging, cold pressing composite molding work
Skill, base process are a hot forging processes, and distortion process is cold forming process, integrally formed locking bolt has been made, the forging technology
Before softening to forging, forging is cleared up and is preheated, by Duplex treatment, not only ensure that the clean of forging surface
Degree, also effectively avoids when softening to forging, due to instantaneous high-temperature, causes to damage to forging external morphology, forging is effectively ensured
Quality it is detected and is surface-treated, the quality of forging products is further improved and after the completion of forging,
Indirectly improve its service life.Using the technique after the optimization, makes complicated forging part be easier to realize, save material
And manpower, it is time saving and energy saving, while the occupancy of equipment is saved, it is suitable for complicated forge piece, is suitable for being widely used to promote.
The examples are only for explaining the invention, and embodiments described above is only the preferred embodiment of the present invention, and simultaneously
The non-restriction to protection scope of the present invention, technical field those of ordinary skill within the scope of knowledge, may be used also
To make a variety of changes without departing from the purpose of the present invention, any improvement done based on spirit of that invention all ought to be
Within the scope of the present invention.
Claims (9)
1. a kind of forging processing method of locking bolt, it is characterised in that: increase a distortion technique after trimming technology, specifically include
Following steps: pretreatment → blanking → heating → blocking → base → molding → trimming → distortion → heat treatment → detection → surface
Cleaning → flaw detection, specific process are as follows:
S1: pretreatment chooses the round steel forging for needing to forge, and the impurity on forging surface is polished by grinding device,
The impurity on forging surface can be removed, to guarantee the quality in forging process, is then carried out the forging after polishing multiple
Cleaning, it is spare after drying；
S2: pre- upsetting base is heated in blanking: by band sawing machine to round steel blanking, by under round steel at rodlike lower materials and parts, the ruler of lower materials and parts
Very little specification is φ 205-210*155-160mm；
S3: by machine automatization feeding device high-frequency induction furnace is added in lower materials and parts by heating, and heating temperature is 1000 ± 50
DEG C, friction feeding；
S4: blocking, the lower materials and parts after heating are carried out jumping-up, are formed using 1000T hydraulic press, lower materials and parts are first put into first pressure
Under machine on heading, press machine applies under pressure, and upper heading pushes, and carries out generation when material diversion removes heating simultaneously to lower materials and parts
Oxide skin, obtain both ends to be among arc umbrella head be the pre- upsetting blank that disk and head are connected with disk by cylinder；
S5: pre- upsetting blank is put into hotdie forging press by base, and the arc umbrella head at pre- upsetting blank both ends is made in taper die
Reduced with lower diameter, cuts down the formation blank of one end of intermediate disc；
S6: molding trimming: material base is put into rough forge type chamber and carries out rough forge, then blows off oxide skin, then material base is put into finish forge
Finish forge is at blank in type chamber, and the blank trimming for still having residual temperature is then formed target forging, when trimming slab temperature be 700 ±
50°；
S7: distortion distorts blank, and the angle of distortion is 45 ± 5 °, then again successively through over carburizing and heat treatment process,
It obtains distorting molding workpiece；
S8: heat treatment is quenched the blank after distortion, to be tempered room temperature again air-cooled；
S9: detection is tested to forging inside, after the completion of detection, is placed it in processing pond, and add table into processing pond
Surface treatment liquid is surface-treated forging under conditions of 60-80 DEG C, and the time being surface-treated is 60-90min；
S10: removing surface, will distort molding workpiece successively by machining polishing and shot-peening, it is described polishing include circle mill and
Chamfering polishing, shot-peening is then that forging is put into deburring in shot-blasting machine, then sprays isolation lacquer, arrives essence after its drying
The forging products really forged；
S11: flaw detection first sprays magnetic flaw detection ink, then carries out magnetic spy, and be repeated twice, and finally demagnetization obtains finished product.
2. the forging processing method of locking bolt as described in claim 1, it is characterised in that: in the S8 step, quench Shi Jin
Guarantee that forging full-size direction is vertical with the holding of hardening media upper surface as far as possible before entering hardening media.
3. the forging processing method of locking bolt as described in claim 1, it is characterised in that: in the S8 step, required for forging
Specification after, quenching using 1050-1100 DEG C of oil it is cold, tempering use 200-300 DEG C of slow cooling.
4. the forging processing method of locking bolt as described in claim 1, it is characterised in that: in the flaw detection step of the S11, forging
Then forging is placed in 100-150 DEG C of environment by part surface even application magnetic flaw detection ink, using magnetic spy instrument to forging inside into
After the completion of magnetic spy, the magnetic flaw detection ink on forging surface is removed, utilizes ultrasonic examination again to guarantee the quality of forging for row detection
Instrument has not damage to forging inside to be detected again.
5. the forging processing method of locking bolt as claimed in claim 4, it is characterised in that: the magnetic flaw detection ink is oiliness fluorescent magnetic
Powder, tasteless kerosene, fluxing agent and surfactant mixed liquor, and oiliness fluorescentmagnetic particle(powder), tasteless kerosene, fluxing agent and table
The molal weight ratio of face activating agent is 1:0.5:0.1:0.1.
6. the forging processing method of locking bolt as claimed in claim 5, it is characterised in that: the S8 step heat treatment step it
Before, Carburization Treatment, carburized (case) depth 0.2-0.4mm are also carried out to forging, infiltration area surface hardness is 50-60HRC.
7. the forging processing method of locking bolt as described in claim 1, it is characterised in that: the technique for grinding in the S9 step is
Peripheral milling, circle mill diameter is 5-8mm, forms peripheral milling part.
8. the forging processing method of locking bolt as described in claim 1, it is characterised in that: the surface treatment liquid in the S9 is salt
Acid, tannic acid, zinc nitrate, complexing agent and surfactant mixed liquor.
9. the forging processing method of locking bolt as described in claim 1, it is characterised in that: in the surface treatment liquid, hydrochloric acid, list
Rather the molal weight ratio of acid, zinc nitrate, complexing agent and surfactant is 1:1:1:0.1:0.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811132515.1A CN109482794A (en) | 2018-09-27 | 2018-09-27 | A kind of forging processing method of locking bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811132515.1A CN109482794A (en) | 2018-09-27 | 2018-09-27 | A kind of forging processing method of locking bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109482794A true CN109482794A (en) | 2019-03-19 |
Family
ID=65689971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811132515.1A Pending CN109482794A (en) | 2018-09-27 | 2018-09-27 | A kind of forging processing method of locking bolt |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110076272A (en) * | 2019-05-06 | 2019-08-02 | 昆山众诚精密锻造有限公司 | A kind of 1215 material forging technologies |
| CN110193573A (en) * | 2019-06-12 | 2019-09-03 | 昆山众诚精密锻造有限公司 | A kind of forging technology of engine retarder gantry forging |
| CN110560616A (en) * | 2019-08-29 | 2019-12-13 | 济宁市兖州区鑫旺机械有限公司 | Flat pressing plate forging process |
| CN110788564A (en) * | 2019-10-07 | 2020-02-14 | 祝红梅 | Lock cylinder plunger iron sharp head processing technology |
| CN113510213A (en) * | 2021-04-22 | 2021-10-19 | 浙江远大重工锻压有限公司 | Pipe forging equipment and method |
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| CN113510213A (en) * | 2021-04-22 | 2021-10-19 | 浙江远大重工锻压有限公司 | Pipe forging equipment and method |
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Application publication date: 20190319 |
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