CN103952525B - The working method of spring steel bow band - Google Patents
The working method of spring steel bow band Download PDFInfo
- Publication number
- CN103952525B CN103952525B CN201410157284.5A CN201410157284A CN103952525B CN 103952525 B CN103952525 B CN 103952525B CN 201410157284 A CN201410157284 A CN 201410157284A CN 103952525 B CN103952525 B CN 103952525B
- Authority
- CN
- China
- Prior art keywords
- spring steel
- steel bow
- bow band
- blank
- band blank
- 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.)
- Active
Links
Abstract
The invention discloses the working method of spring steel bow band, comprise 1) will enter in spring steel bow band mould under molten steel; 2) on spring steel bow band blank, bow band central channel is stamped out; 3) on spring steel bow band blank, apply anti-decarburizing coating, and be heated to 840 DEG C ~ 870 DEG C, insulation 30 ~ 40min, then in the quenching oil of 75 ~ 85 DEG C, the spring steel bow being coated with anti-decarburizing coating is with blank quench cooled 4 ~ 6 minutes; 4) the spring steel bow band blank through quench cooled process is carried out temper; 5) the spring steel bow band blank through temper is carried out nitric acid salt bath cooling process; 6) by grinding machine, the spring steel bow band blank end face after nitric acid salt bath cooling process and bottom surface are polished, form spring steel bow band finished product.Invention increases intensity and the work-ing life of spring steel bow band, ensure that the speed of rotation of double twisting device.
Description
Technical field
The present invention relates to the spring steel bow band in the double twisting device of twisting steel cord, refer to the working method of a kind of spring steel bow band particularly.
Background technology
Along with developing rapidly of automobile industry, the double twisting device device requirement producing tire steel cord is increased day by day.During double twisting device twisting steel cord, rotating disk high-speed rotation, steel cord, because the effect of centrifugal force throws away, now needs a kind of bow of high strength to bring constraint steel cord.Existing spring steel bow band adopts conventional processing mode to make, namely through Milling Machining, heat-treating profiled.The spring steel bow band strength of this routine is not high, fragile, only 2 ~ 3 months mean life, and if the bow band of fracture processes often damage equipment not in time, and reduce the speed of rotation of double twisting device, add the production cost of enterprise.
Summary of the invention
Object of the present invention is exactly the working method that a kind of spring steel will be provided to bend band, and the spring steel using this working method to produce bow band has higher intensity, and work-ing life significantly improves.
For realizing this object, the working method of the spring steel bow band designed by the present invention, it is characterized in that, it comprises the steps:
Step 1: will enter under molten steel in existing spring steel bow band mould, form spring steel bow band blank after cooling;
Step 2: stamp out bow band central channel with punch press on spring steel bow band blank, then on spring steel bow band blank, beat Go-over mould open holes with drilling machine, then chamfering deburring process is carried out to spring steel bow band blank;
Step 3: the spring steel bow band blank surface after processing through step 2 applies anti-decarburizing coating, then the spring steel bow band blank being coated with anti-decarburizing coating is loaded heat treatment tooling and fixes, and the spring steel bow band blank being coated with anti-decarburizing coating is heated to 840 DEG C ~ 870 DEG C, and be incubated 30 ~ 40min, then in the quenching oil of 75 ~ 85 DEG C, the described spring steel bow being coated with anti-decarburizing coating is with blank quench cooled 4 ~ 6 minutes;
Step 4: the spring steel bow band blank through quench cooled process is carried out temper, and the tempering temperature in temper process is 420 ~ 440 DEG C, and the soaking time in temper process is 60 ~ 90 minutes;
Step 5: the spring steel bow band blank through temper is carried out nitric acid salt bath cooling process;
Step 6: the spring steel bow band blank end face after nitric acid salt bath cooling process and bottom surface are polished by grinding machine, and by grinding machine, the spring steel bow band blank two ends after nitric acid salt bath cooling process are polished chamfering, form spring steel bow band finished product;
Step 7, carries out hardness determination to spring steel bow band finished product and metallographic detects.
Further, the molten steel in described step 1 is 60Si2Mn molten steel.
Further, described quenching oil is made up of the machine oil of weight percent content 60 ~ 65% and the heavy oil of weight percent content 35 ~ 40%.
Further, in described step 5, the temperature of described nitric acid salt bath is 165 ~ 175 DEG C.
Further, in described step 5, the spring steel bow band blank after nitric acid salt bath cooling process is carried out cleaning and dry up process.
Further, after the spring steel bow band blank of temper carries out nitric acid salt bath cooling process, making spring steel bend band blank hardness in described step 5 is Rockwell hardness 40 ~ 45.
Further, in described step 6, spring steel bow band blank end face and bottom surface are polished into surfaceness and are Ra (profile arithmetic average error) less than 0.8 by grinding machine.
Further, in described step 6, the chamfering at spring steel bow band blank two ends is polished into 10 ° by grinding machine.
The present invention achieves strain hardening by the punch steps arranging bow band central channel, reduces the stress concentration of central channel to the impact of bow band fatigue lifetime.In the present invention, nitric acid salt bath cooling cantle band obtains excellent weave construction, is out of shape very little; And quenching cantle band is stress situation, the cracking that can greatly reduce in the use procedure of bow band is dangerous.
In sum, the present invention, by setting gradually the salt-cooled treatment step of above-mentioned heating, quench cooled, tempering and nitric acid, improves intensity and the work-ing life of spring steel bow band, ensure that the speed of rotation of double twisting device.The life-span of the spring steel bow band using the present invention to produce brought up to 10 months by original 2 ~ 3 months, reduced the production cost of enterprise.
Accompanying drawing explanation
Fig. 1 is the structural representation of spring steel bow band;
Fig. 2 is that the A-A of Fig. 1 is to sectional structure schematic diagram;
Fig. 3 is the structural representation of heat treatment tooling in the utility model.
Wherein, 1-bow band central channel, 2-Go-over mould open holes, 3-heat treatment tooling, 3.1-transverse plate, 3.2-longitudinal plate, 3.3-adjustment elongated hole, 3.4-dog screw, 3.5-spring steel bow band erection column, 3.6-heat treatment tooling open holes, 4-end face, 5-bottom surface, 6-chamfering.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
A working method for spring steel bow band, it is characterized in that, it comprises the steps:
Step 1: (during blanking, the thickness direction of mould stays the surplus of 0.3 ~ 0.5mm by entering under molten steel in existing spring steel bow band mould, this surplus is used to provide enough mill process redundancy on the one hand, on the other hand surperficial issuable Decarburized layer is removed), form spring steel bow band blank after cooling;
Step 2: stamp out bow band central channel 1 (the bow band central channel 1 stamped out is for strengthening bow band) with punch press (350T hydraulic press) on spring steel bow band blank, on spring steel bow band blank, beating Go-over mould open holes 2 (Go-over mould open holes 2 is for installing Go-over mould) with drilling machine again, then chamfering deburring process (chamfering deburring process is with blank fried mouth raw edges when follow-up quench treatment for reducing spring steel bow) being carried out to spring steel bow band blank;
Step 3: the spring steel bow band blank surface after processing through step 2 applies anti-decarburizing coating, then the spring steel bow band blank being coated with anti-decarburizing coating is loaded heat treatment tooling 3 and fixes, and the spring steel bow band blank being coated with anti-decarburizing coating is heated to 840 DEG C ~ 870 DEG C, and be incubated 30 ~ 40min, then in the quenching oil of 75 ~ 85 DEG C by the described spring steel bow band blank quench cooled being coated with anti-decarburizing coating 4 ~ 6 minutes (determination of each processing parameter in step 3, contribute to crystal grain thinning, improve toughness proof strength simultaneously);
Step 4: the spring steel bow band blank through quench cooled process is carried out temper, tempering temperature in temper process is 420 ~ 440 DEG C, soaking time in temper process is 60 ~ 90 minutes, and the setting of above-mentioned tempering temperature and soaking time can increase sorbite ratio to improve plasticity and toughness;
Step 5: the spring steel bow band blank through temper is carried out nitric acid salt bath cooling process;
Step 6: by grinding machine, the spring steel bow band blank end face 4 after nitric acid salt bath cooling process and bottom surface 5 are polished, and by grinding machine, the spring steel bow band blank two ends after nitric acid salt bath cooling process are polished chamfering 6, form spring steel bow band finished product.
Step 7, carries out hardness determination to spring steel bow band finished product and metallographic detects, and ensures that the spring steel bow band be used on double twisting device is qualified product.
Molten steel in the step 1 of technique scheme is 60Si2Mn molten steel, and it is high that this kind of molten steel has tensile strength, the advantage of good toughness after suitable thermal treatment.
In technique scheme, described quenching oil is made up of the machine oil of weight percent content 60 ~ 65% and the heavy oil of weight percent content 35 ~ 40%.The ratio of above-mentioned heavy oil and machine oil can ensure the hardening capacity of quench treatment.The composition of this quenching oil can ensure the hardening capacity of quench treatment.
In the step 5 of technique scheme, the spring steel bow band blank after nitric acid salt bath cooling process is carried out cleaning and dry up process.
After the spring steel bow band blank of temper carries out nitric acid salt bath cooling process, making spring steel bend band blank hardness in the step 5 of technique scheme is Rockwell hardness 40 ~ 45.
In the step 6 of technique scheme, spring steel bow band blank end face and bottom surface are polished into surfaceness and are below Ra0.8 (this roughness can improve be unlikely to again fatigue lifetime to increase too many cost) by grinding machine.Such fatigue strength that can improve spring steel bow band.
In the step 6 of technique scheme, the chamfering at spring steel bow band blank two ends is polished into 10 ° of above-mentioned chamferings of 10 ° and is conducive to the wind reduced when spring steel bow band runs up and makes an uproar and windage by grinding machine, and unlikely intensity reduces too many again.
The present invention is in the specific implementation: the length forming spring steel bow band blank in above-mentioned steps 1 be 920mm, wide for 25mm, thick be 2mm, its material composition content is designated as C0.61%, Si1.7%, Mn0.75%, Cr0.32%, P+S≤0.04% by weight percentage, and surplus is iron and other trace impurity.
In above-mentioned steps 2, bow band central channel 1 is circular groove, and its groove depth is 0.5mm, and groove inside radius R is 8mm, and it is the hole of 5.5mm that described Go-over mould open holes 2 has 28 diameter phi to be the hole of 3mm and 4 diameter phi.Chamfering deburring process, long limit C0.3, hole C0.2.
In above-mentioned steps 3, spring steel bow band blank is heated to 840 DEG C, and be incubated 30min, after in the quenching oil of 80 DEG C by spring steel bow band blank quench cooled 4 minutes, this quenching oil is made up of weight percent content 60% machine oil and weight percent content 40% heavy oil;
In above-mentioned steps 4, the tempering temperature of temper process is 430 DEG C, and the soaking time in temper process is 70 minutes;
In above-mentioned steps 6, in the process of polishing to spring steel bow band blank, the grinding tolerance of bow band central channel 1 is 0.1mm; The frock clamp that spring steel bow band blank is clamped in band 8 ° of inclination angles completes chamfering.
In technique scheme, heat treatment tooling 3 surrounds tower structure by two transverse plates 3.1 and two longitudinal plates 3.2, transverse plate 3.1 is positioned at below longitudinal plate 3.2, the two ends of described transverse plate 3.1 are provided with and regulate elongated hole 3.3, the two ends of longitudinal plate 3.2 are provided with and the dog screw 3.4 regulating elongated hole 3.3 to mate, and described each longitudinal plate 3.2 is provided with row's spring steel bow band erection column 3.5.When spring steel bow band is installed, the heat treatment tooling open holes 3.6 at spring steel bow band two ends is fit into corresponding multiple spring steel bow band erection columns 3.5, by regulating dog screw 3.4 and regulating elongated hole 3.3 during use, the elasticity during band heating of spring steel bow can be adjusted.This heat treatment tooling 3 can process multiple spring steel bow band simultaneously.
The content that this specification sheets is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (8)
1. a working method for spring steel bow band, it is characterized in that, it comprises the steps:
Step 1: will enter under molten steel in existing spring steel bow band mould, form spring steel bow band blank after cooling;
Step 2: stamp out bow band central channel (1) with punch press on spring steel bow band blank, then on spring steel bow band blank, beat Go-over mould open holes (2) with drilling machine, then chamfering deburring process is carried out to spring steel bow band blank;
Step 3: the spring steel bow band blank surface after processing through step 2 applies anti-decarburizing coating, then the spring steel bow band blank being coated with anti-decarburizing coating is loaded heat treatment tooling (3) and fixes, and the spring steel bow band blank being coated with anti-decarburizing coating is heated to 840 DEG C ~ 870 DEG C, and be incubated 30 ~ 40min, then in the quenching oil of 75 ~ 85 DEG C, the described spring steel bow being coated with anti-decarburizing coating is with blank quench cooled 4 ~ 6 minutes;
Step 4: the spring steel bow band blank through quench cooled process is carried out temper, and the tempering temperature in temper process is 420 ~ 440 DEG C, and the soaking time in temper process is 60 ~ 90 minutes;
Step 5: the spring steel bow band blank through temper is carried out nitric acid salt bath cooling process;
Step 6: spring steel bow band blank end face (4) and bottom surface (5) after nitric acid salt bath cooling process is polished by grinding machine, and by grinding machine, the spring steel bow band blank two ends after nitric acid salt bath cooling process are polished chamfering (6), form spring steel bow band finished product;
In described step 5, the temperature of described nitric acid salt bath is 165 ~ 175 DEG C.
2. the working method of spring steel bow band according to claim 1, is characterized in that: the molten steel in described step 1 is 60Si2Mn molten steel.
3. the working method of spring steel bow band according to claim 1, is characterized in that: described quenching oil is made up of the machine oil of weight percent content 60 ~ 65% and the heavy oil of weight percent content 35 ~ 40%.
4. the working method of spring steel bow band according to claim 1, is characterized in that: in described step 5, the spring steel bow band blank after nitric acid salt bath cooling process is carried out cleaning and dry up process.
5. the working method of spring steel bow band according to claim 1, is characterized in that: after the spring steel bow band blank of temper carries out nitric acid salt bath cooling process, making spring steel bend band blank hardness in described step 5 is Rockwell hardness 40 ~ 45.
6. the working method of spring steel bow band according to claim 1, is characterized in that: in described step 6, spring steel bow band blank end face and bottom surface are polished into surfaceness and are below Ra0.8 by grinding machine.
7. the working method of spring steel bow band according to claim 1, is characterized in that: in described step 6, the chamfering at spring steel bow band blank two ends is polished into 10 ° by grinding machine.
8. the working method of spring steel bow band according to claim 1, is characterized in that: also comprise step 7 after described step 6, carries out hardness determination and metallographic detection to spring steel bow band finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410157284.5A CN103952525B (en) | 2014-04-18 | 2014-04-18 | The working method of spring steel bow band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410157284.5A CN103952525B (en) | 2014-04-18 | 2014-04-18 | The working method of spring steel bow band |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103952525A CN103952525A (en) | 2014-07-30 |
| CN103952525B true CN103952525B (en) | 2016-02-03 |
Family
ID=51329872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410157284.5A Active CN103952525B (en) | 2014-04-18 | 2014-04-18 | The working method of spring steel bow band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103952525B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107541590A (en) * | 2017-10-27 | 2018-01-05 | 北京卡特刘科技有限公司 | A kind of heat treatment method for alloy spring steel |
| CN114273865B (en) * | 2021-12-30 | 2022-10-14 | 天津赛象科技股份有限公司 | Preparation method of large-range high-compatibility finger-shaped sheet of agricultural radial tire forming machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059375A (en) * | 1990-08-30 | 1992-03-11 | 天津大学 | The hot-work die highly malleablized is handled |
| CN102676782A (en) * | 2012-05-08 | 2012-09-19 | 无锡宏达热处理锻造有限公司 | Thermal treatment process of copper tube perforation needle |
| CN102943271A (en) * | 2012-12-07 | 2013-02-27 | 沈阳洪达信息科技有限公司 | Heating processing technology of gantry crane bridge frame |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002361348A (en) * | 2001-06-11 | 2002-12-17 | Topy Ind Ltd | Manufacturing method for catapillar strip link |
-
2014
- 2014-04-18 CN CN201410157284.5A patent/CN103952525B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059375A (en) * | 1990-08-30 | 1992-03-11 | 天津大学 | The hot-work die highly malleablized is handled |
| CN102676782A (en) * | 2012-05-08 | 2012-09-19 | 无锡宏达热处理锻造有限公司 | Thermal treatment process of copper tube perforation needle |
| CN102943271A (en) * | 2012-12-07 | 2013-02-27 | 沈阳洪达信息科技有限公司 | Heating processing technology of gantry crane bridge frame |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103952525A (en) | 2014-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104741693B (en) | Pendulum-type concave-convex shear blade | |
| CN102581145B (en) | Method for manufacturing high-hardness and high-abrasion-resistant pre-bending machine lower die | |
| CN110257617B (en) | Forging and heat treatment method of large-size 20SiMn main shaft | |
| CN102407242B (en) | Cold drawing method of special-shaped bearing steel bar material | |
| CN103361586B (en) | Processing method for raising strength and toughness of TC4-DT titanium alloy sheet materials | |
| CN102766751B (en) | Process method for quenching rotary support gear | |
| CN101966645B (en) | Production method for high-precision rolling ball screw | |
| CN105441789B (en) | Large circular knife and manufacturing method thereof | |
| CN102310315B (en) | Flat machine triangle processing technology | |
| CN101837386A (en) | Method for manufacturing titanium alloy thick-wall pipe | |
| CN103952525B (en) | The working method of spring steel bow band | |
| CN108526365B (en) | Forging forming method of large titanium alloy central part | |
| CN104353976B (en) | Pivoting support processing and Technology for Heating Processing | |
| CN104128762A (en) | Lathe spindle machining technology facilitating machining efficiency and product quality | |
| CN102766749B (en) | Process for quenching ball track of slewing bearing | |
| CN105537487B (en) | Various shaped fishplate manufacture method and mould | |
| CN106736321A (en) | A kind of 20Cr cam cuttings technique | |
| CN106425340A (en) | Non-traditional machining method of RV cycloid gear | |
| CN113005279A (en) | Processing method of full-hardened intermediate roll | |
| CN104032115A (en) | Thermal treatment method for reducing secondary gear ring nitrogenized deformation | |
| CN206997361U (en) | A kind of finishing mill roll-force monitoring device | |
| CN103331583B (en) | A kind of Caterpillar track hinge pin processing method | |
| CN104531969A (en) | Heat treatment method for reducing automobile insert deformation | |
| CN103551827A (en) | Turning tool manufacturing method | |
| CN101885135B (en) | Method for manufacturing hammer shaft of single-stage hammer crusher |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |