CN2724871Y - Cooling apparatus used for electric contact type continuous hot drawing mould - Google Patents
Cooling apparatus used for electric contact type continuous hot drawing mould Download PDFInfo
- Publication number
- CN2724871Y CN2724871Y CN 03250011 CN03250011U CN2724871Y CN 2724871 Y CN2724871 Y CN 2724871Y CN 03250011 CN03250011 CN 03250011 CN 03250011 U CN03250011 U CN 03250011U CN 2724871 Y CN2724871 Y CN 2724871Y
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- mould
- fixed plate
- mould cover
- mold fixed
- cover
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Abstract
The utility model adopts the method that a circulation water channel is added on the fixed plate of the hot drawing mould to cause the fixed plate of the hot drawing mould to heat the metal material by adopting the electrical contact method, and the heat produced by the hot drawing processing of the metal material is carried away by the cooling water via a mould and a mould sleeve, which causes the mould and the mould sleeve to be kept at a lower temperature and makes the temperature of the mould sleeve to be lower than the temperature of the mould all along to prevent the generation of the expansion and the explosion owing to that the mould can not bear the inner expanding force which is led by the tightening ring force of the mould sleeve on the mould that is due to the fact that the heat expansion of the mould sleeve is bigger than the heat expansion of the mould. On the other hand, due to the fact that the mould keeps the lower temperature, the reduction of the abrasion resistance of the mould material is avoided, and the service life of the mould is prolonged.
Description
Technical field:
The utility model relates to a kind of employing and electrically contacts mode heating of metal material, and to the wire drawing die cooling device that metal material carries out hot-drawn processing, promptly is used to electrically contact the cooling device of formula Continuous Heat drawing-die.
Technical background:
For improving the quality of drawing efficient, raising drawable material, in the drawing of metal material processing (in the drawing processing of particularly difficult deformable metal material) often adopt hot-drawn technology, be about to metal material and pass through variety of way, make by the metal material of drawing and be heated to uniform temperature (being generally 500 ℃-800 ℃), under this temperature, carry out drawing processing.Electrically contact heating and be one of the most frequently used hot drawn mode of heating of metal material.In electrically contacting mode of heating, usually with wire drawing die as an electrode, the place ahead at wire drawing die will be connected with power supply as another electrode by the wire of drawing by variety of way, then, leading to electric current between two electrodes, because metal material has resistance, will produce heat, reaches the purpose of heating of metal material.Usually, drawing mould adopts the preparation of hardness higher material, but because this type of material fragility is bigger, expanding easily when bearing inner expanding force bursts.For head it off, adopt toughness preferred metal material to make the mould cover, the drawing mould hoop is enclosed within the mould cover, make mould can bear big inner expanding force.Common drawing mould profile is a cylinder, and the profile of mould cover is often made trapezoidal cone, and there is a cavity identical with die shape inside.For guaranteeing that mould is not drawn out the mould cover in drawing process, the thickness of mould cover is greater than mold thickness, and an end of mould cover is semiclosed shape, a ratio is only arranged by the bigger hole of drawing metal material.In fact, mould is embedded in the mould cover.For guaranteeing the clamping force of mould cover to mould, the diameter of mould cover inner chamber is little than the mould external diameter, adopts the thermal expansion mode that mould is embedded in the mould cover.Usually, also adopt the quadrangle mold fixed plate that mould is fixed on the drawbench together with the mould cover.The mold fixed plate profile is a quadrangle, and thickness is thick than the mould cover.Centre bit be equipped with one with the identical trapezoidal cone cavity of mould cover profile, the other end is semiclosed shape, only has one than by the bigger hole of drawing metal material, mould and mould cover are embedded in this cavity.Be pulled through in the journey in Continuous Heat, to be delivered to mould and mould cover by the heat of drawing metal material, cause the temperature of mould and mould cover to raise, because the used material of mould and mould cover is different, and the thermal coefficient of expansion of mould cover material therefor is greater than mold materials usually, and the thermal expansion that causes the mould cover causes the mould cover that the clamping force of mould is descended greater than mould, mould is held can't stand inner expanding force, producing expands bursts.On the other hand,, cause the wearability of mold materials to reduce, shortened service life because mold temperature raises.In the case, as adopt direct bath cooling, then may be because the inequality of being heated causes the mould cracking.
Summary of the invention:
The purpose of this utility model provides a kind of cooling device that is used to electrically contact formula Continuous Heat drawing-die, employing increases the mode of circulation water channel on mold fixed plate, the heat of mould and mould cover is taken away by the heat transmission water that is cooled, make mould and mould cover remain on lower temperature, and make the temperature of mould cover be lower than mould all the time, the thermal expansion of avoiding overlapping because of mould makes the mould cover descend to the clamping force of mould greater than mould, cause mould to hold and can't stand inner expanding force, producing expands bursts.On the other hand,, avoided the reduction of the wearability of mold materials, prolonged die life because mould keeps lower temperature.
Description of drawings:
Fig. 1: the utility model embodiment front view (cutaway view)
Fig. 2: the utility model embodiment side view (cutaway view)
The specific embodiment:
The utility model is described in further detail below in conjunction with an embodiment and accompanying drawing.
As shown in Figure 1 and Figure 2, columniform mould 4 quilt hoops are enclosed within the interior cylindrical cavity of mould cover 3, and the profile of mould cover 3 is trapezoidal cone, and mould cover 3 is fixed on the shape at mold fixed plate 1 middle part again and overlaps in the identical cavity of profile with mould.The thickness of mould, mould cover and mold fixed plate increases successively.The other end of mould cover and fixed head cavity is semiclosed shape, and a hole more bigger than drawing metal material only arranged.Around mould cover 3 cooling water channel 2 is set at mold fixed plate 1, cooling water channel 2 is in the center of mold fixed plate 1 thickness, and forms quadrangle circulation water channel in the length and width direction of mold fixed plate 1.Center at side's thickness of mold fixed plate 1 is provided with water inlet 5 and delivery port 6.In the hot-drawn process, water inlet 5 injects cooling water, and cooling water flows out from delivery port 6 in mold fixed plate 1 inner loop one week back along cooling water channel 2.The heat that mould 4 is born is delivered on the mold fixed plate 1 by mould cover 3, take away by the cooling water that flows in the cooling water channel 2 that is in mold fixed plate 1 inside, play the effect of heat radiation, thereby reduced the temperature of mould 4 and mould cover 3, make the temperature of mould cover 3 be lower than the temperature of mould 4 all the time, make the thermal expansion of mould cover 3 little, guaranteed clamping force, mould 4 is not expanded by inner expanding force burst than mould 4.Because cooling water has been taken away heat, guarantee that the temperature of mould 4 does not raise in addition, its wearability can not reduced, thereby prolonged the service life of mould.
Claims (1)
1, a kind of cooling device that is used to electrically contact formula Continuous Heat drawing-die, columniform mould (4) is bound round in the interior cylindrical cavity that is enclosed within mould cover (3), the profile of mould cover (3) is trapezoidal cone, mould cover (3) is fixed on again in the shape at mold fixed plate (1) the middle part cavity identical with mould cover (3) profile, mould, the thickness of mould cover and mold fixed plate increases successively, the other end of mould cover and fixed head cavity is semiclosed shape, one hole more bigger than drawing metal material only arranged, it is characterized in that: along mould cover (3) cooling water channel (2) is set all around at mold fixed plate (1), cooling water channel (2) is in the center of mold fixed plate (1) thickness, and form quadrangle circulation water channel in the length and width direction of mold fixed plate (1), be provided with water inlet (5) and delivery port (6) in the center of side's thickness of mold fixed plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03250011 CN2724871Y (en) | 2003-08-19 | 2003-08-19 | Cooling apparatus used for electric contact type continuous hot drawing mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03250011 CN2724871Y (en) | 2003-08-19 | 2003-08-19 | Cooling apparatus used for electric contact type continuous hot drawing mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2724871Y true CN2724871Y (en) | 2005-09-14 |
Family
ID=35039599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03250011 Expired - Fee Related CN2724871Y (en) | 2003-08-19 | 2003-08-19 | Cooling apparatus used for electric contact type continuous hot drawing mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2724871Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105327958A (en) * | 2015-11-09 | 2016-02-17 | 无锡市锡山区仁景模具厂 | Wire-drawing die with good heat radiation performance |
-
2003
- 2003-08-19 CN CN 03250011 patent/CN2724871Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105327958A (en) * | 2015-11-09 | 2016-02-17 | 无锡市锡山区仁景模具厂 | Wire-drawing die with good heat radiation performance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |