CN108723718A - The processing method for the hot coiling spring that wire diameter is 90 millimeters - Google Patents
The processing method for the hot coiling spring that wire diameter is 90 millimeters Download PDFInfo
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- CN108723718A CN108723718A CN201810559772.7A CN201810559772A CN108723718A CN 108723718 A CN108723718 A CN 108723718A CN 201810559772 A CN201810559772 A CN 201810559772A CN 108723718 A CN108723718 A CN 108723718A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F3/00—Coiling wire into particular forms
- B21F3/02—Coiling wire into particular forms helically
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- 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
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- Mechanical Engineering (AREA)
- Heat Treatment Of Steel (AREA)
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Abstract
A kind of processing method for the hot coiling spring that wire diameter is 90 millimeters, steps are as follows：Sorting, blanking, tagging, hot briquetting, quenching treatment, temper makees the swirling flows for examining thermal treatment quality and stabilizing spring size, makees the mill spring processing for ensureing free height and verticality, spring-load is tested by design requirement, flaw detection is handled, and is examined, bead, surface treatment.This processing method is simple for process, easy to operate, and production cost is low, and the helical spring bearing capacity of processing is strong, in use, solves the problems, such as that spring number can not be increased when small product size is restricted.
Description
Technical field
The present invention relates to a kind of processing method of helical spring, especially a kind of wire diameter is 90 millimeters of hot rolling bullet
The processing method of spring.
Background technology
Currently, the spring steel material of well known manufacture spring is 60Si2CrVA, material diameter through blanking, is quenched within 60 millimeters
The techniques such as fiery processing, temper can reach various performance indicators and can guarantee that metallographic structure is secondary troostite.Work as material diameter
Be difficult to meet its performance indicator by existing Conventional processing methods when more than 60 millimeters of φ, using oil be hardening media material without
Method through hardening, center portion have a small amount of bainite and sorbite.The use of water is such as that hardening media easy tos produce hardening crack phenomenon again, can cause
Extreme loss.Especially the material diameter of spring wire is 90 millimeters of φ, can not also be processed into helical spring at present.It was using
Cheng Zhong will such as increase load, can only be by the way of two or more spring serial or parallel connections, in the range of finite volume very
It is difficult to resolve certainly.The previous practice is exactly to increase small product size, increases number of springs, and when given volume, increase number of springs just at
To be difficult to solve the problems, such as.
Invention content
The object of the present invention is to provide a kind of processing methods for the hot coiling spring that wire diameter is 90 millimeters, to increase list
The bearing load of a spring, overcome the deficiencies in the prior art.
The processing method for the hot coiling spring that the wire diameter of the present invention is 90 millimeters, includes the following steps：
A, a diameter of 90 millimeters of materials for 60Si2CrVA hot rolling and air cooling spring steel is selected in sorting；
B, blanking determines length, and reconditioning cut surface using autogenous cutting；
The two ends of spring wire are transitioned into square type section, the heating forged by c, tagging in the way of forging from circular section
Temperature is 980~1000 DEG C, and heating time is 95~105 minutes, and the heated length of two ends is 900~950 millimeters, after forging
Point is 900~1000 millimeters long, and point is 72~82 millimeters wide, and point is 22~27 millimeters thick, and the final temperature forged is 900~920 DEG C.
D, hot briquetting, heating temperature are 980~1000 DEG C, and soaking time is 115~130 minutes, and mandrel is straight when hot rolling
Diameter be 315 millimeters, pitch be 142~144 millimeters, the number of effective coils 3.8, number of total coils 5.3, once completed using spring coiling machine into
Feed collet is tight, and rolls building ring and end moulding；
The spring that upper step rolls is heated and is monitored by e, quenching treatment, when the own temperature of spring reaches 825~
At 835 DEG C, spring is placed in hardening media, the sodium-chloride water solution that hardening media is 10%~15%, spring workpiece is being quenched
Run duration is 32~40 seconds in fiery medium；
F, temper, heating temperature are 460~480 DEG C, and tempering time 280~320 minutes is then air-cooled；
G, make the swirling flows of inspection thermal treatment quality and stabilizing spring size；
H, make to ensure that the mill spring of free height and verticality is handled；
I, it presses design requirement and tests spring-load；
J, flaw detection is handled；
K, it examines；
L, bead；
M, it is surface-treated.
The processing method for the hot coiling spring that the wire diameter of the present invention is 90 millimeters, wherein hard after the temper
Degree is HRC45-50, and the metallographic structure after tempering is secondary troostite, 0.5 millimeter of decarburized layer deepness <；The swirling flows
It is that swirling flows are carried out to spring piece by piece on horizontal power press, suppresses 48 tons of load, suppress number 3 times；Described in above-mentioned k steps
Inspection be to make the inspection of following items to every spring：Wire diameter, spring outer diameter, free height, the number of effective coils are total to enclose
Number, verticality, the depth of parallelism, load test P1=270088N ± 5%, P2=382200N ± 5%, processing of halting, hardness decarburization
It examines, metal lographic examination；The bead is to carry out shot peening strengthening, pellet to spring on suspension type throwing pill strengthening cleaning machine
A diameter of 1.2~1.4 millimeters, the shot-peening time is 20 minutes, and 1 every time, surface coverage is 98%~100%, shot peening strength
0.4~0.45A；The surface treatment is to carry out an iron oxide red primer processing and secondary middle grey finishing coat application to the surface of spring
Processing.
The processing method for the hot coiling spring that the wire diameter of the present invention is 90 millimeters, simple for process, easy to operate, production
At low cost, the helical spring bearing capacity of processing is strong, and in use, solving can not increase when small product size is restricted
The problem of spring number.
Specific implementation mode
The processing method for the hot coiling spring that the wire diameter of the present invention is 90 millimeters, includes the following steps：
A, sorting, it is the hot rolling and air cooling spring steel of 60Si2CrVA to select a diameter of 90 millimeters of materials, the chemistry of material at
Part and mechanical performance need to meet the requirement of GB/T1222 standards, and dimensional discrepancy executes the standard of degree of precision in GB/T702 standards.
B, the cutting length of blanking, spring wire is 6235 ± 60 millimeters, i.e. length is determined as 6175 millimeters or 6195 millimeters
Or 6215 millimeters or 6235 millimeters or 6255 millimeters or 6275 millimeters or 6295 millimeters.It is carried out down in the way of autogenous cutting
Material, cut surface hand handle grinding wheel reconditioning, to ensure that end point fine fisssure does not occur after grinding point, forging.
The two ends of spring wire are transitioned into square type section from circular section in the way of forging, forge heating and set by c, tagging
Standby to use fuel oil type heating furnace, the heating temperature forged is 980 DEG C or 985 DEG C or 990 DEG C or 995 DEG C or 1000 DEG C, i.e., 980
Between~1000 DEG C；Heating time is 95 minutes or 100 minutes or 105 minutes, i.e., between 95~105 minutes；
The heated length of two ends is 900 millimeters or 910 millimeters or 920 millimeters or 930 millimeters or 940 millimeters or 950 millimeters, that is, is existed
Between 900~950 millimeters；A length of 900 millimeters or 950 millimeters or 1000 millimeters of metacone is forged, i.e., at 900~1000 millimeters
Between；Sharp width is 72 millimeters or 77 millimeters or 82 millimeters, i.e., between 72~82 millimeters；Sharp thickness is 22 millimeters or 23
Millimeter or 25 millimeters or 27 millimeters, i.e., between 22~27 millimeters；The final temperature forged is 900 DEG C or 910 DEG C or 920
DEG C, i.e., between 900~920 DEG C.
D, hot briquetting, heating are carried out in microcomputer controls rolling bottom formula electric furnace, and heating temperature is 980 DEG C or 985
DEG C or 990 DEG C or 995 DEG C or 1000 DEG C, i.e., between 980~1000 DEG C；Soaking time be 115 minutes or 120 minutes or
125 minutes or 130 minutes, i.e., between 115~130 minutes；When hot rolling axle diameter be 315 millimeters, pitch be 142~
144 millimeters, the number of effective coils 3.8, number of total coils 5.3 is once completed pan feeding clamping using spring coiling machine, and rolls building ring and end
Head is molded, and spring coiling machine stops rotating after a roll-forming, unclamps clamp system, takes out claw, and spring coiling machine is reversely rotated, removed
The spring of forming, completes the hot briquetting of a spring at this time, and the AF80/ of Germany's manufacture can be selected in wind spring former
140CNC type spring coiling machines.
E, quenching treatment, the spring rolled to upper step under the continuous monitoring of far infrared intelligent temperature measurement instrument are heated simultaneously
Monitoring, when the own temperature of spring reaches 825 DEG C or 830 DEG C or 835 DEG C, i.e., when between 825~835 DEG C, the instrument of setting
Spring is placed in hardening media by device alarm equipment alarm, the sodium-chloride water solution that hardening media is 10% or 15%, i.e. sodium chloride
The concentration of aqueous solution is between 10%~15%；It is carried out at quenching using the quenching unit of heat-treatment quenching sink front
Reason, quenching unit are to rotate to make quenching unit move up and down with movable sprocket, chain by motor, and the distance of up and down motion passes through row
Cheng Kaiguan and adjustable buting iron, the time of up and down motion is adjustable by the time relay.90 millimeters of spring workpiece are in hardening media
It ceaselessly moves up and down, run duration is 32 seconds or 34 seconds or 36 seconds or 38 seconds or 40 seconds, i.e., between 32~40 seconds.It reaches
To after the run duration of setting, propose that spring workpiece completes quenching process from medium.
F, temper after spring quenches in the medium, will carry out quenching hardness measurement, hardness range HRC > 58, then
It is transferred to this process and carries out temper, tempering equipment selects cabinet-type electric furnace.Heating temperature be 460 DEG C or 470 DEG C or 480 DEG C, i.e.,
Between 460~480 DEG C；Tempering time is 280 minutes or 290 minutes or 300 minutes or 310 minutes or 320 minutes, i.e.,
Between 280~320 minutes；Timing after being tripped to temperature with stove, it is air-cooled after tempering, and hardness and metallographic structure are examined, it returns
Hardness is HRC45-50 after fire, and the metallographic structure after tempering is secondary troostite, decarburized layer deepness < 0.5mm.
G, the swirling flows for making inspection thermal treatment quality and stabilizing spring size, spring is placed on horizontal power press piece by piece
Swirling flows are carried out, 48 tons of load is suppressed, it is 3 times to suppress number.
H, make to ensure that the mill spring of free height and verticality is handled, horizontal reed milling machine is selected to grind the two ends of spring
It cuts, to ensure the free height and verticality of setting.
I, design requirement test spring-load is pressed to be born under the premise of the geometric dimension of spring meets design requirement
Lotus is tested, and testing equipment selects 100T cylindrical spring force measuring machines, carries out piece by piece.
J, flaw detection is handled, and every spring carries out fluorescent magnetic particle flaw detection, the portable magnetic powder inspections of testing equipment CJW-1000
Machine.
K, it examines, every spring is intended to carry out the inspection of following items：Steel wire diameter, spring outer diameter, free height, work
Make the number of turns, number of total coils, verticality, the depth of parallelism, load test P1=270088N ± 5%, P2=382200N ± 5%, place of halting
Reason, hardness decarburization are examined, metal lographic examination.
L, bead, shot peening strengthening is carried out on suspension type throwing pill strengthening cleaning machine to spring, and pellet diameters determine
Between 1.2~1.4, the shot-peening time be 20 minutes, 1 every time, surface coverage 98%~100%, shot peening strength be 0.4~
0.45A。
M, it is surface-treated, an iron oxide red primer processing and secondary middle grey finishing coat application processing is carried out to the surface of spring.
Claims (2)
1. a kind of processing method for the hot coiling spring that wire diameter is 90 millimeters, it is characterised in that：Include the following steps：
A, sorting, it is the hot rolling and air cooling spring steel of 60Si2CrVA to select a diameter of 90 millimeters of materials；
B, blanking determines length, and reconditioning cut surface using autogenous cutting；
The two ends of spring wire are transitioned into square type section, the heating temperature forged by c, tagging in the way of forging from circular section
It it is 980~1000 DEG C, heating time is 95~105 minutes, and the heated length of two ends is 900~950 millimeters, and it is long to forge metacone
900~1000 millimeters, point is 72~82 millimeters wide, and point is 22~27 millimeters thick, and the final temperature forged is 900~920 DEG C.
D, hot briquetting, heating temperature are 980~1000 DEG C, and soaking time is 115~130 minutes, and axle diameter is when hot rolling
315 millimeters, pitch is 142~144 millimeters, and the number of effective coils 3.8, number of total coils 5.3 is once completed using spring coiling machine into feed collet
Tightly, and building ring and end moulding are rolled；
The spring that upper step rolls is heated and is monitored by e, quenching treatment, when the own temperature of spring reaches 825~835 DEG C
When, spring is placed in hardening media, the sodium-chloride water solution that hardening media is 10%~15%, spring workpiece is in hardening media
Middle run duration is 32~40 seconds；
F, temper, heating temperature are 460~480 DEG C, and tempering time 280~320 minutes is then air-cooled；
G, make the swirling flows of inspection thermal treatment quality and stabilizing spring size；
H, make to ensure that the mill spring of free height and verticality is handled；
I, it presses design requirement and tests spring-load；
J, flaw detection is handled；
K, it examines；
L, bead；
M, it is surface-treated.
2. the processing method for the hot coiling spring that wire diameter according to claim 1 is 90 millimeters, it is characterised in that：Institute
Hardness is HRC45-50 after the temper stated, and the metallographic structure after tempering is secondary troostite, 0.5 millis of decarburized layer deepness <
Rice；The swirling flows are to carry out swirling flows to spring piece by piece on horizontal power press, suppress 48 tons of load, suppress number
3 times；Inspection described in above-mentioned k steps is to make the inspection of following items to every spring：Wire diameter, spring outer diameter, freely
Highly, the number of effective coils, number of total coils, verticality, the depth of parallelism, load test P1=270088N ± 5%, P2=382200N ± 5%,
It halts processing, hardness decarburization is examined, metal lographic examination；The bead is on suspension type throwing pill strengthening cleaning machine to spring
Carry out shot peening strengthening, pellet diameters be 1.2~1.4 millimeters, the shot-peening time be 20 minutes, 1 every time, surface coverage 98%
~100%, 0.4~0.45A of shot peening strength；The surface treatment be to the surface of spring carry out an iron oxide red primer processing and
Secondary middle grey finishing coat application processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810559772.7A CN108723718A (en) | 2018-06-02 | 2018-06-02 | The processing method for the hot coiling spring that wire diameter is 90 millimeters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810559772.7A CN108723718A (en) | 2018-06-02 | 2018-06-02 | The processing method for the hot coiling spring that wire diameter is 90 millimeters |
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| Publication Number | Publication Date |
|---|---|
| CN108723718A true CN108723718A (en) | 2018-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810559772.7A Withdrawn CN108723718A (en) | 2018-06-02 | 2018-06-02 | The processing method for the hot coiling spring that wire diameter is 90 millimeters |
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| Country | Link |
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| CN (1) | CN108723718A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111349773A (en) * | 2020-02-24 | 2020-06-30 | 无锡市东亭新强弹簧厂 | Spring heat treatment process |
| CN111926165A (en) * | 2020-08-13 | 2020-11-13 | 无锡金峰园弹簧制造有限公司 | Heat treatment process of 60Si2CrA spring steel |
| CN113414655A (en) * | 2021-07-26 | 2021-09-21 | 浙江富淳弹簧有限公司 | Spring end face grinding machine and spring manufacturing process applying grinding machine |
-
2018
- 2018-06-02 CN CN201810559772.7A patent/CN108723718A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111349773A (en) * | 2020-02-24 | 2020-06-30 | 无锡市东亭新强弹簧厂 | Spring heat treatment process |
| CN111926165A (en) * | 2020-08-13 | 2020-11-13 | 无锡金峰园弹簧制造有限公司 | Heat treatment process of 60Si2CrA spring steel |
| CN111926165B (en) * | 2020-08-13 | 2022-04-05 | 无锡金峰园弹簧制造有限公司 | Heat treatment process of 60Si2CrA spring steel |
| CN113414655A (en) * | 2021-07-26 | 2021-09-21 | 浙江富淳弹簧有限公司 | Spring end face grinding machine and spring manufacturing process applying grinding machine |
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Application publication date: 20181102 |