CN107511406A - A kind of drawing process of wiper arm - Google Patents
A kind of drawing process of wiper arm Download PDFInfo
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- CN107511406A CN107511406A CN201710684118.4A CN201710684118A CN107511406A CN 107511406 A CN107511406 A CN 107511406A CN 201710684118 A CN201710684118 A CN 201710684118A CN 107511406 A CN107511406 A CN 107511406A
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- Prior art keywords
- wiper arm
- ultrasonic
- galvanized sheet
- wire drawing
- drawing process
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C9/00—Cooling, heating or lubricating drawing material
Abstract
The invention discloses a kind of drawing process of wiper arm, and galvanized sheet is obtained into wiper arm blank by ultrasonic drawing, and wiper arm blank then is obtained into wiper arm through punching, stretching and thick shaping successively；Wherein, the specific method of ultrasonic drawing is：Wire drawing die is preheated to 500~600 DEG C, the furnace temperature of heating furnace of wire drawing machine rises to 1400~1500 DEG C, and galvanized sheet is put into wire drawing machine is processed, ultrasonic exciting is applied by supersonic generator, ultrasonic frequency is 30~40kHz, and supply voltage is 250~300V, and electric current is 0.4~0.6A；And using the Ludox and aquadag of mass ratio 1: 1 as lubricant, drawing speed is 500~600mm/s.The drawing process of the present invention has the characteristics that production efficiency is high, energy consumption is low and product quality is high, and obtained wiper arm product qualification rate is high, and has preferable mechanical performance and corrosion resistance.
Description
Technical field
The present invention relates to a kind of drawing process, and in particular to a kind of drawing process of wiper arm.Belong to the life of auto parts machinery
Production. art technical field.
Background technology
Domestic vehicles industry is fast-developing in recent years, and has attracted the whole world such as including masses many by huge market potential
The sight of more well-known automobile vendor, these enterprises come to China to invest one after another, technology, hardware by the offer of these transnational enterprises, with
And the guarantee in production capacity, China turn into the well-known automobile production state in the whole world within a few years time.
Bar of the wiper arm as automobile anterior support windscreen wiper, it is that rain brush is connected with automobile in numerous vehicle-mounted accessories
Part, windscreen wiper is equivalent to the hand of people, and wiper arm is equivalent to the arm of people, and it is for rainy day vehicle safety travel to closing
Important, if automobile cannot drive a car without vehicle wiper, user during the rainy day, therefore, wiper is for automobile can not
An or scarce part.
But wiper arm is as a kind of annex, due to the homogeneity of manufacturer's manufacturer's standard, its manufacturing process always no
To lifting.In the prior art, automobile wiper arm is shaped by rheo-die-casting, and its technical process is：Casting-machining
(car, milling)-punching, process is more, the production cycle is long, energy consumption consumption is more, efficiency is low, cost is high, it is impossible to preferably adapts to production
The needs of development.And because extrusion process has the problem of easily causing wiper arm stress distribution inequality, it is used for multiple times easily
Cause the both ends of automobile wiper arm to produce fracture, can also occur the phenomenon skidded when joint rotates, easily cause wiper failure,
Potential safety hazard be present.
With deepening continuously for economic globalization, China's Automobile Parts Industry must walk out participate in it is international
In the middle of competition, sustainable development is realized in the market competition of fierceness, improves the production technology and quality of wiper arm product
It is exactly one of important directions.
The content of the invention
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of drawing process of wiper arm, is had
The features such as production efficiency is high, energy consumption is low and product quality is high.
To achieve the above object, the present invention uses following technical proposals：
A kind of drawing process of wiper arm, galvanized sheet is obtained into wiper arm blank by ultrasonic drawing, then by windscreen wiper
Arm blank obtains wiper arm through punching, stretching and thick shaping successively；Wherein, the specific method of ultrasonic drawing is：By wire drawing die
500~600 DEG C are preheated to, the furnace temperature of heating furnace of wire drawing machine rises to 1400~1500 DEG C, and galvanized sheet is put into wire drawing machine is added
Work, ultrasonic exciting being applied by supersonic generator, ultrasonic frequency is 30~40kHz, and supply voltage is 250~300V,
Electric current is 0.4~0.6A；And lubricant is used as using the Ludox and aquadag of mass ratio 1: 1, drawing speed for 500~
600mm/s。
As one of preferable technical scheme, the wire drawing die that the ultrasonic drawing uses uses man-made polycrystalline diamond.
As one of preferable technical scheme, wire drawing die that the ultrasonic drawing uses, its work taper is 10~
12°。
As one of preferable technical scheme, using preceding being pre-processed, wiper arm blank advances galvanized sheet in punching
800~900 DEG C of high temperature of row, which are smeared, wipes processing, and pretreatment comprises the following steps that：
(1) galvanized sheet is processed by shot blasting using polishing machine；
(2) phosphate coat, phosphatization temperature are 60~70 DEG C, and phosphating time is 20~30 minutes；
(3) it is soaked in the methanol solution of the polyvinyl butyral resin of mass concentration 20~30%, supersonic oscillations processing 2~
3 hours；
(4) be heat-treated producing after taking out, process of thermal treatment condition is：400 are warming up to 5~8 DEG C/min~
5~6 hours are incubated after 450 DEG C, is incubated 20~30 minutes after being then warming up to 550~600 DEG C with 12~15 DEG C/min, finally
40~50 minutes are incubated after being warming up to 650~700 DEG C with 2~4 DEG C/min, natural cooling.
As one of preferable technical scheme, the model H260PD+Z140/140 of the galvanized sheet.
As one of preferable technical scheme, the wiper arm blank, which is placed on stamping machine, to be punched out, stretches and thick whole
Shape is processed.
As one of preferable technical scheme, the thick shaping is processed according to the design shape of wiper arm.
As one of further preferred technical scheme, the design shape of the wiper arm includes arm, neck and head,
The arm, neck and head are an entirety, and its cross section is U-shaped, and neck is connected by the first arcuate structure with arm,
Head is connected by the second arcuate structure with neck.
As one of technical scheme still more preferably, several bendings that are provided with spaced inwardly of arm side are linked up with
(being preferably 7), for fixing water pipe；Head includes top surface, left surface and right flank, and square opening, right side are provided with top surface
A small sircle hole and a small square hole are provided with face, is also provided with a hook on right flank laterally, for fixed and rain
The working of plastics of scraping article connection；The first aperture and second orifice, the first aperture and are respectively arranged with two sides of arm tail end
Two apertures are coaxial, for being hinged with windscreen wiper fixing end；A boss is inwardly provided with arm, one is provided with the boss
Through hole.
As one of preferable technical scheme, the high temperature smears the charcoal realization for wiping processing using burning, the charcoal
Particle diameter is 0.08~0.1mm, and the burning zone thickness of charcoal is 8~12mm.
As one of preferable technical scheme, in step (2), the process conditions of phosphate coat are：Total acidity 50~60
Point, free acidity 5~8 point.
As one of preferable technical scheme, in step (3), the methanol solution of the polyvinyl butyral resin is by poly- second
Enol butyral add methanol in, stirring and dissolving and obtain.
Beneficial effects of the present invention：
1st, the present invention has selected galvanized sheet as raw material, but galvanized sheet exists to improve the antiseptic property of wiper arm
The damage of Zinc coat is inevitably caused in the process such as experience wire drawing, and then reduces and even loses antiseptic property.
In order to solve this contradiction, the present invention is pre-processed before galvanized sheet use, and the thick of zinc-plated plate surface is reduced by polishing
Rugosity, then phosphate coat, improves the processing characteristicies such as the wire drawing of galvanized sheet, meanwhile, the phosphating coat of formation is loose structure, with reference to
The methanol solution soaking step of follow-up polyvinyl butyral resin, polyvinyl butyral resin is promoted fully to fill out by supersonic oscillations
It is charged in loose structure, the heat treatment step then to be heated up by three-stage, promotes entering for polyvinyl butyral resin and phosphating coat
One step merges, and so as to form protective layer to zinc-plated plate surface, improves the overall impact resistance of galvanized sheet, in order to avoid made in drawing process
Mechanical damage into coating ensures the antiseptic property of wiper arm product.
2nd, wiper arm blank of the invention carries out high temperature and smeared to wipe processing before punching, can promote the inside of wiper arm blank
Structure optimization, improve the mechanical performance of wiper.
3rd, it can realize that continuous production operates using ultrasonic drawing technique, production efficiency is high, saves material, and can
It is a large amount of to save the energy.
4th, ultrasonic drawing can improve the lubricity in process, prevent " stinging mould ", and can reduce pulling capacity, greatly
Deformation force in amplitude reduction process so that deformation of products uniform force, improve the mechanical strength of product.
5th, the accurate size of product, any surface finish, greatly improves qualification rate.
Brief description of the drawings
Fig. 1~Fig. 3 is the design shape structural representation of wiper arm；
Wherein, 1 is arm, and 11 be that bending is linked up with, and 12 be the first aperture, and 13 be second orifice, and 14 be boss, and 141 be logical
Hole, 2 be neck, and 3 be head, and 31 be top surface, and 311 be square opening, and 32 be left surface, and 33 be right flank, and 331 be small sircle hole,
332 be small square hole, and 333 be hook, and 4 be the first arcuate structure, and 5 be the second arcuate structure.
Embodiment
The present invention will be further elaborated with reference to the accompanying drawings and examples, it should which explanation, the description below is only
It is to explain the present invention, its content is not defined.
The model H260PD+Z140/140 of galvanized sheet of the present invention, it is limited purchased from upper Haiquan sunrise foreign trade
Company.The wire drawing machine used during ultrasonic drawing of the present invention is Harbin cable factory LH-200/17 types.
As shown in Figures 1 to 3, thick shaping of the present invention is processed according to the design shape of wiper arm, the rain
Scraping arm design shape includes arm 1, neck 2 and head 3, and arm 1, neck 2 and head 3 are an entirety, and its cross section is U
Type, neck 2 are connected by the first arcuate structure 4 with arm 1, and head 3 is connected by the second arcuate structure 5 with neck 2.Arm 1
Side 7 bendings that are provided with spaced inwardly link up with 11, for fixing water pipe；Head 3 includes top surface 31, left surface 32 and right side
Face 33, square opening 311 is provided with top surface 31, a small sircle hole 331 and a small square hole 332 are provided with right flank 33, it is right
A hook 333 is also provided with side 33 laterally, for the fixed working of plastics being connected with windscreen wiper bar；1 tail end of arm two
It is respectively arranged with the first aperture 12 and second orifice 13 on side, the first aperture 12 and second orifice 13 are coaxial, are used for and windscreen wiper
Fixing end is hinged；A boss 14 is inwardly provided with arm 1, a through hole 141 is provided with boss 14.
Embodiment 1：
A kind of drawing process of wiper arm, galvanized sheet is obtained into wiper arm blank by ultrasonic drawing, then by windscreen wiper
Arm blank obtains wiper arm through punching, stretching and thick shaping successively；Wherein, the specific method of ultrasonic drawing is：By wire drawing die
500 DEG C are preheated to, the furnace temperature of heating furnace of wire drawing machine rises to 1400 DEG C, and galvanized sheet is put into wire drawing machine is processed, and passes through ultrasound
Wave producer applies ultrasonic exciting, ultrasonic frequency 30kHz, supply voltage 250V, electric current 0.4A；And use matter
Ludox of the amount than 1: 1 and aquadag are as lubricant, and drawing speed 500mm/s, the taper that works is 10 °.
Galvanized sheet is smeared and wipes processing using preceding being pre-processed, wiper arm blank carries out 800 DEG C of high temperature before punching, pre- place
Reason comprises the following steps that：
(1) galvanized sheet is processed by shot blasting using polishing machine；
(2) phosphate coat, phosphatization temperature are 60 DEG C, and phosphating time is 20 minutes；
(3) it is soaked in the methanol solution of the polyvinyl butyral resin of mass concentration 20%, supersonic oscillations are handled 2 hours；
(4) be heat-treated producing after taking out, process of thermal treatment condition is：Protected after being warming up to 400 DEG C with 5 DEG C/min
Temperature 5 hours, is incubated 20 minutes after being then warming up to 550 DEG C with 12 DEG C/min, is protected after being finally warming up to 650 DEG C with 2 DEG C/min
Temperature 40 minutes, natural cooling.
High temperature smears the charcoal realization for wiping processing using burning, and the particle diameter of charcoal is 0.08mm, and the burning zone thickness of charcoal is
8mm。
In step (2), the process conditions of phosphate coat are：50 points of total acidity, 5 points of free acidity.
In step (3), the methanol solution of the polyvinyl butyral resin is to add polyvinyl butyral resin in methanol, is stirred
Mix dissolving and obtain.
Wiper arm product qualification rate is more than 99%.
Embodiment 2：
A kind of drawing process of wiper arm, galvanized sheet is obtained into wiper arm blank by ultrasonic drawing, then by windscreen wiper
Arm blank obtains wiper arm through punching, stretching and thick shaping successively；Wherein, the specific method of ultrasonic drawing is：By wire drawing die
600 DEG C are preheated to, the furnace temperature of heating furnace of wire drawing machine rises to 1500 DEG C, and galvanized sheet is put into wire drawing machine is processed, and passes through ultrasound
Wave producer applies ultrasonic exciting, ultrasonic frequency 40kHz, supply voltage 300V, electric current 0.6A；And use matter
Ludox of the amount than 1: 1 and aquadag are as lubricant, and drawing speed 600mm/s, the taper that works is 12 °.
Galvanized sheet is smeared and wipes processing using preceding being pre-processed, wiper arm blank carries out 900 DEG C of high temperature before punching, pre- place
Reason comprises the following steps that：
(1) galvanized sheet is processed by shot blasting using polishing machine；
(2) phosphate coat, phosphatization temperature are 70 DEG C, and phosphating time is 30 minutes；
(3) it is soaked in the methanol solution of the polyvinyl butyral resin of mass concentration 30%, supersonic oscillations are handled 3 hours；
(4) be heat-treated producing after taking out, process of thermal treatment condition is：Protected after being warming up to 450 DEG C with 8 DEG C/min
Temperature 6 hours, is incubated 30 minutes after being then warming up to 600 DEG C with 15 DEG C/min, is protected after being finally warming up to 700 DEG C with 4 DEG C/min
Temperature 50 minutes, natural cooling.
High temperature smears the charcoal realization for wiping processing using burning, and the particle diameter of charcoal is 0.1mm, and the burning zone thickness of charcoal is
12mm。
In step (2), the process conditions of phosphate coat are：60 points of total acidity, 8 points of free acidity.
In step (3), the methanol solution of the polyvinyl butyral resin is to add polyvinyl butyral resin in methanol, is stirred
Mix dissolving and obtain.
Wiper arm product qualification rate is more than 99%.
Embodiment 3：
A kind of drawing process of wiper arm, galvanized sheet is obtained into wiper arm blank by ultrasonic drawing, then by windscreen wiper
Arm blank obtains wiper arm through punching, stretching and thick shaping successively；Wherein, the specific method of ultrasonic drawing is：By wire drawing die
500 DEG C are preheated to, the furnace temperature of heating furnace of wire drawing machine rises to 1500 DEG C, and galvanized sheet is put into wire drawing machine is processed, and passes through ultrasound
Wave producer applies ultrasonic exciting, ultrasonic frequency 30kHz, supply voltage 300V, electric current 0.4A；And use matter
Ludox of the amount than 1: 1 and aquadag are as lubricant, and drawing speed 600mm/s, the taper that works is 10 °.
Galvanized sheet is smeared and wipes processing using preceding being pre-processed, wiper arm blank carries out 800 DEG C of high temperature before punching, pre- place
Reason comprises the following steps that：
(1) galvanized sheet is processed by shot blasting using polishing machine；
(2) phosphate coat, phosphatization temperature are 70 DEG C, and phosphating time is 20 minutes；
(3) it is soaked in the methanol solution of the polyvinyl butyral resin of mass concentration 30%, supersonic oscillations are handled 2 hours；
(4) be heat-treated producing after taking out, process of thermal treatment condition is：Protected after being warming up to 400 DEG C with 8 DEG C/min
Temperature 6 hours, is incubated 20 minutes after being then warming up to 600 DEG C with 12 DEG C/min, is protected after being finally warming up to 650 DEG C with 4 DEG C/min
Temperature 50 minutes, natural cooling.
High temperature smears the charcoal realization for wiping processing using burning, and the particle diameter of charcoal is 0.1mm, and the burning zone thickness of charcoal is
8mm。
In step (2), the process conditions of phosphate coat are：60 points of total acidity, 5 points of free acidity.
In step (3), the methanol solution of the polyvinyl butyral resin is to add polyvinyl butyral resin in methanol, is stirred
Mix dissolving and obtain.
Wiper arm product qualification rate is more than 99%.
Embodiment 4：
A kind of drawing process of wiper arm, galvanized sheet is obtained into wiper arm blank by ultrasonic drawing, then by windscreen wiper
Arm blank obtains wiper arm through punching, stretching and thick shaping successively；Wherein, the specific method of ultrasonic drawing is：By wire drawing die
600 DEG C are preheated to, the furnace temperature of heating furnace of wire drawing machine rises to 1400 DEG C, and galvanized sheet is put into wire drawing machine is processed, and passes through ultrasound
Wave producer applies ultrasonic exciting, ultrasonic frequency 40kHz, supply voltage 250V, electric current 0.6A；And use matter
Ludox of the amount than 1: 1 and aquadag are as lubricant, and drawing speed 500mm/s, the taper that works is 12 °.
Galvanized sheet is smeared and wipes processing using preceding being pre-processed, wiper arm blank carries out 900 DEG C of high temperature before punching, pre- place
Reason comprises the following steps that：
(1) galvanized sheet is processed by shot blasting using polishing machine；
(2) phosphate coat, phosphatization temperature are 60 DEG C, and phosphating time is 30 minutes；
(3) it is soaked in the methanol solution of the polyvinyl butyral resin of mass concentration 20%, supersonic oscillations are handled 3 hours；
(4) be heat-treated producing after taking out, process of thermal treatment condition is：Protected after being warming up to 450 DEG C with 5 DEG C/min
Temperature 5 hours, is incubated 30 minutes after being then warming up to 550 DEG C with 15 DEG C/min, is protected after being finally warming up to 700 DEG C with 2 DEG C/min
Temperature 40 minutes, natural cooling.
High temperature smears the charcoal realization for wiping processing using burning, and the particle diameter of charcoal is 0.08mm, and the burning zone thickness of charcoal is
12mm。
In step (2), the process conditions of phosphate coat are：50 points of total acidity, 8 points of free acidity.
In step (3), the methanol solution of the polyvinyl butyral resin is to add polyvinyl butyral resin in methanol, is stirred
Mix dissolving and obtain.
Wiper arm product qualification rate is more than 99%.
Embodiment 5：
A kind of drawing process of wiper arm, galvanized sheet is obtained into wiper arm blank by ultrasonic drawing, then by windscreen wiper
Arm blank obtains wiper arm through punching, stretching and thick shaping successively；Wherein, the specific method of ultrasonic drawing is：By wire drawing die
550 DEG C are preheated to, the furnace temperature of heating furnace of wire drawing machine rises to 1450 DEG C, and galvanized sheet is put into wire drawing machine is processed, and passes through ultrasound
Wave producer applies ultrasonic exciting, ultrasonic frequency 35kHz, supply voltage 280V, electric current 0.5A；And use matter
Ludox of the amount than 1: 1 and aquadag are as lubricant, and drawing speed 550mm/s, the taper that works is 11 °.
Galvanized sheet is smeared and wipes processing using preceding being pre-processed, wiper arm blank carries out 850 DEG C of high temperature before punching, pre- place
Reason comprises the following steps that：
(1) galvanized sheet is processed by shot blasting using polishing machine；
(2) phosphate coat, phosphatization temperature are 65 DEG C, and phosphating time is 25 minutes；
(3) it is soaked in the methanol solution of the polyvinyl butyral resin of mass concentration 25%, supersonic oscillations processing 2.5 is small
When；
(4) be heat-treated producing after taking out, process of thermal treatment condition is：Protected after being warming up to 420 DEG C with 7 DEG C/min
Temperature 5.5 hours, is incubated 25 minutes, after being finally warming up to 680 DEG C with 3 DEG C/min after being then warming up to 580 DEG C with 13 DEG C/min
Insulation 45 minutes, natural cooling.
High temperature smears the charcoal realization for wiping processing using burning, and the particle diameter of charcoal is 0.09mm, and the burning zone thickness of charcoal is
10mm。
In step (2), the process conditions of phosphate coat are：55 points of total acidity, 7 points of free acidity.
In step (3), the methanol solution of the polyvinyl butyral resin is to add polyvinyl butyral resin in methanol, is stirred
Mix dissolving and obtain.
Wiper arm product qualification rate is more than 99%.
Comparative example 1
A kind of drawing process of wiper arm, galvanized sheet is obtained into wiper arm blank by ultrasonic drawing, then by windscreen wiper
Arm blank obtains wiper arm through punching, stretching and thick shaping successively；Wherein, the specific method of ultrasonic drawing is：By wire drawing die
550 DEG C are preheated to, the furnace temperature of heating furnace of wire drawing machine rises to 1450 DEG C, and galvanized sheet is put into wire drawing machine is processed, and passes through ultrasound
Wave producer applies ultrasonic exciting, ultrasonic frequency 35kHz, supply voltage 280V, electric current 0.5A；And use matter
Ludox of the amount than 1: 1 and aquadag are as lubricant, and drawing speed 550mm/s, the taper that works is 11 °.
Wiper arm blank carries out 850 DEG C of high temperature before punching to be smeared and wipes processing.
High temperature smears the charcoal realization for wiping processing using burning, and the particle diameter of charcoal is 0.09mm, and the burning zone thickness of charcoal is
10mm。
Wiper arm product qualification rate is more than 56%.
Comparative example 2
A kind of drawing process of wiper arm, galvanized sheet is obtained into wiper arm blank by ultrasonic drawing, then by windscreen wiper
Arm blank obtains wiper arm through punching, stretching and thick shaping successively；Wherein, the specific method of ultrasonic drawing is：By wire drawing die
550 DEG C are preheated to, the furnace temperature of heating furnace of wire drawing machine rises to 1450 DEG C, and galvanized sheet is put into wire drawing machine is processed, and passes through ultrasound
Wave producer applies ultrasonic exciting, ultrasonic frequency 35kHz, supply voltage 280V, electric current 0.5A；And use matter
Ludox of the amount than 1: 1 and aquadag are as lubricant, and drawing speed 550mm/s, the taper that works is 11 °.
Using preceding being pre-processed, pretreatment comprises the following steps that galvanized sheet：
(1) galvanized sheet is processed by shot blasting using polishing machine；
(2) phosphate coat, phosphatization temperature are 65 DEG C, and phosphating time is 25 minutes；
(3) it is soaked in the methanol solution of the polyvinyl butyral resin of mass concentration 25%, supersonic oscillations processing 2.5 is small
When；
(4) be heat-treated producing after taking out, process of thermal treatment condition is：Protected after being warming up to 420 DEG C with 7 DEG C/min
Temperature 5.5 hours, is incubated 25 minutes, after being finally warming up to 680 DEG C with 3 DEG C/min after being then warming up to 580 DEG C with 13 DEG C/min
Insulation 45 minutes, natural cooling.
Ultrasonic drawing is to apply ultrasonic exciting by supersonic generator, wherein, ultrasonic frequency 18kHz, electricity
Source voltage is 280V, electric current 0.5A.The wire drawing die of use uses man-made polycrystalline diamond, drawing speed 550mm/s, work
Taper is 11 °.
In step (2), the process conditions of phosphate coat are：55 points of total acidity, 7 points of free acidity.
In step (3), the methanol solution of the polyvinyl butyral resin is to add polyvinyl butyral resin in methanol, is stirred
Mix dissolving and obtain.
Wiper arm product qualification rate is more than 55%.
Comparative example 3
A kind of drawing process of wiper arm, galvanized sheet is obtained into wiper arm blank by ultrasonic drawing, then by windscreen wiper
Arm blank obtains wiper arm through punching, stretching and thick shaping successively；Wherein, the specific method of ultrasonic drawing is：By wire drawing die
550 DEG C are preheated to, the furnace temperature of heating furnace of wire drawing machine rises to 1450 DEG C, and galvanized sheet is put into wire drawing machine is processed, and passes through ultrasound
Wave producer applies ultrasonic exciting, ultrasonic frequency 35kHz, supply voltage 280V, electric current 0.5A；And use stone
Black breast is used as lubricant, drawing speed 200mm/s, and work taper is 11 °.
Galvanized sheet is smeared and wipes processing using preceding being pre-processed, wiper arm blank carries out 850 DEG C of high temperature before punching, pre- place
Reason comprises the following steps that：
(1) galvanized sheet is processed by shot blasting using polishing machine；
(2) phosphate coat, phosphatization temperature are 65 DEG C, and phosphating time is 25 minutes；
(3) it is soaked in the methanol solution of the polyvinyl butyral resin of mass concentration 25%, supersonic oscillations processing 2.5 is small
When；
(4) be heat-treated producing after taking out, process of thermal treatment condition is：Protected after being warming up to 420 DEG C with 7 DEG C/min
Temperature 5.5 hours, is incubated 25 minutes, after being finally warming up to 680 DEG C with 3 DEG C/min after being then warming up to 580 DEG C with 13 DEG C/min
Insulation 45 minutes, natural cooling.
High temperature smears the charcoal realization for wiping processing using burning, and the particle diameter of charcoal is 0.09mm, and the burning zone thickness of charcoal is
10mm。
In step (2), the process conditions of phosphate coat are：55 points of total acidity, 7 points of free acidity.
In step (3), the methanol solution of the polyvinyl butyral resin is to add polyvinyl butyral resin in methanol, is stirred
Mix dissolving and obtain.
Wiper arm product qualification rate is more than 43%.
Test example
Same size (350mm) wiper arm being processed into embodiment 1~5 and comparative example 1~3, investigates it respectively
Mechanical performance and corrosion resistance, are shown in Table 1.
The mechanical performance of table 1. and corrosion resistance compare
As shown in Table 1, comparative example 1 omits the pre-treatment step before galvanized sheet use, and the corrosion resistance of product has substantially
Decline；Comparative example 2, which omits high temperature of the wiper arm blank before punching, smears and wipes processing step, and the mechanical performance of product substantially becomes
Difference；Comparative example 3 is that the lubricant replacement used during ultrasonic drawing is single component aquadag, and reduces wire drawing speed
Degree, the mechanical performance and corrosion resistance of product are substantially deteriorated, and usual ultrasonic drawing could be substantially when reducing drawing speed
Pulling capacity is reduced, properties of product are deteriorated on the contrary after understanding drawing speed reduction by comparative example 3.And the processing of embodiment 1~5 obtains rain
Curette, there is obvious preferably mechanical performance and corrosion resistance, illustrate the ultrasonic drawing technological parameter of the present invention, and it is zinc-plated
The high temperature of pretreatment and wiper arm blank before punching before plate use, which is smeared, to be wiped processing and is very important.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, model not is protected to the present invention
The limitation enclosed, on the basis of technical scheme, those skilled in the art need not pay creative work and can do
The various modifications or deformation gone out are still within protection scope of the present invention.
Claims (7)
1. a kind of drawing process of wiper arm, it is characterised in that galvanized sheet is obtained into wiper arm blank by ultrasonic drawing, so
Wiper arm blank is obtained into wiper arm through punching, stretching and thick shaping successively afterwards；Wherein, the specific method of ultrasonic drawing is：
Wire drawing die is preheated to 500~600 DEG C, the furnace temperature of heating furnace of wire drawing machine rises to 1400~1500 DEG C, and galvanized sheet is put into wire drawing
Machine is processed, and applies ultrasonic exciting by supersonic generator, ultrasonic frequency is 30~40kHz, supply voltage 250
~300V, electric current are 0.4~0.6A；And it is as lubricant, drawing speed using the Ludox and aquadag of mass ratio 1: 1
500~600mm/s.
2. the drawing process of a kind of wiper arm according to claim 1, it is characterised in that what the ultrasonic drawing used
Wire drawing die, its work taper are 10~12 °.
3. the drawing process of a kind of wiper arm according to claim 1, it is characterised in that galvanized sheet is carried out in advance before use
Processing, wiper arm blank carries out 800~900 DEG C of high temperature before punching to be smeared and wipes processing, and pretreatment comprises the following steps that：
(1) galvanized sheet is processed by shot blasting using polishing machine；
(2) phosphate coat, phosphatization temperature are 60~70 DEG C, and phosphating time is 20~30 minutes；
(3) it is soaked in the methanol solution of the polyvinyl butyral resin of mass concentration 20~30%, supersonic oscillations processing 2~3 is small
When；
(4) be heat-treated producing after taking out, process of thermal treatment condition is：400~450 DEG C are warming up to 5~8 DEG C/min
5~6 hours are incubated afterwards, 20~30 minutes are incubated after being then warming up to 550~600 DEG C with 12~15 DEG C/min, finally with 2~4
40~50 minutes are incubated after DEG C/min being warming up to 650~700 DEG C, natural cooling.
A kind of 4. drawing process of wiper arm according to claim 1, it is characterised in that as preferable technical scheme it
One, the thick shaping is processed according to the design shape of wiper arm.
5. the drawing process of a kind of wiper arm according to claim 3, it is characterised in that the high temperature, which is smeared, wipes processing use
The charcoal of burning realizes that the particle diameter of the charcoal is 0.08~0.1mm, and the burning zone thickness of charcoal is 8~12mm.
A kind of 6. drawing process of wiper arm according to claim 3, it is characterised in that in step (2), phosphate coat
Process conditions are：Total acidity 50~60 point, free acidity 5~8 point.
A kind of 7. drawing process of wiper arm according to claim 3, it is characterised in that in step (3), the polyethylene
The methanol solution of butyral be by polyvinyl butyral resin add methanol in, stirring and dissolving and obtain.
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| CN201710684118.4A CN107511406B (en) | 2017-08-03 | 2017-08-03 | A kind of drawing process of wiper arm |
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| CN107511406B CN107511406B (en) | 2018-11-09 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3342050A (en) * | 1965-05-26 | 1967-09-19 | Bell Telephone Labor Inc | Ultrasonic wire drawing |
| JPS5594728A (en) * | 1979-01-09 | 1980-07-18 | Furukawa Electric Co Ltd:The | Wiper unit for wire drawing machine |
| CN200984590Y (en) * | 2006-11-23 | 2007-12-05 | 陈元平 | Ultrasonic wave fiber drawing system |
| CN103264057A (en) * | 2013-05-27 | 2013-08-28 | 石嘴山市宏天工贸实业有限公司 | Cold-drawing shaft production technology by utilizing ultrasonic vibration |
| CN103352381A (en) * | 2013-07-25 | 2013-10-16 | 张家港市胜达钢绳有限公司 | Production method of high-strength steel rope |
| CN103938071A (en) * | 2014-04-30 | 2014-07-23 | 武汉钢铁(集团)公司 | Wire for stranded galvanized steel wire and production method of wire |
-
2017
- 2017-08-03 CN CN201710684118.4A patent/CN107511406B/en not_active Withdrawn - After Issue
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3342050A (en) * | 1965-05-26 | 1967-09-19 | Bell Telephone Labor Inc | Ultrasonic wire drawing |
| JPS5594728A (en) * | 1979-01-09 | 1980-07-18 | Furukawa Electric Co Ltd:The | Wiper unit for wire drawing machine |
| CN200984590Y (en) * | 2006-11-23 | 2007-12-05 | 陈元平 | Ultrasonic wave fiber drawing system |
| CN103264057A (en) * | 2013-05-27 | 2013-08-28 | 石嘴山市宏天工贸实业有限公司 | Cold-drawing shaft production technology by utilizing ultrasonic vibration |
| CN103352381A (en) * | 2013-07-25 | 2013-10-16 | 张家港市胜达钢绳有限公司 | Production method of high-strength steel rope |
| CN103938071A (en) * | 2014-04-30 | 2014-07-23 | 武汉钢铁(集团)公司 | Wire for stranded galvanized steel wire and production method of wire |
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|---|---|
| CN107511406B (en) | 2018-11-09 |
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