CN114309214A - U-shaped oil tank front plate forming and quenching composite device - Google Patents
U-shaped oil tank front plate forming and quenching composite device Download PDFInfo
- Publication number
- CN114309214A CN114309214A CN202210015881.9A CN202210015881A CN114309214A CN 114309214 A CN114309214 A CN 114309214A CN 202210015881 A CN202210015881 A CN 202210015881A CN 114309214 A CN114309214 A CN 114309214A
- Authority
- CN
- China
- Prior art keywords
- pipe
- water
- assembly
- fixed
- die
- 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.)
- Pending
Links
Images
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
The invention provides a forming and quenching composite device for a front plate of a U-shaped oil tank. The upper water spraying assembly is fixed on the upper die support through a hoop, the lower water spraying assembly is fixed on the lower die support through the hoop, and the upper die assembly and the lower die assembly determine relative positions with the guide pillar through the guide sleeve. The composite device integrates the hot-press forming process and the quenching heat treatment process into a whole, realizes the processing method of combining the hot-press forming process and the quenching process together and simultaneously carrying out the hot-press forming process and the quenching process, only needs heating once in the whole processing flow, carries out quenching treatment on the front plate of the hot oil tank in a die profiling state, can effectively reduce the deformation caused by heating and quenching treatment, does not need subsequent correction processes, reduces the die cost, shortens the processing period, improves the efficiency, reduces the energy consumption, reduces the deformation, and ensures the forming quality and the hardness of the front plate of the U-shaped oil tank.
Description
Technical Field
The invention belongs to the technical field of high-strength plate processing and manufacturing, and particularly relates to a forming and quenching composite device for a front plate of a U-shaped oil tank.
Background
The U-shaped oil tank front plate of the special vehicle is difficult to form, high in strength, strong in work hardening sensitivity and incapable of being bent and formed at normal temperature. At present, the forming of the front plate part of the U-shaped oil tank mainly adopts a hot-press forming method, namely, a heated blank material of the front plate of the U-shaped oil tank is subjected to hot-press forming processing, and because the front plate part of the U-shaped oil tank has higher use hardness, the front plate of the U-shaped oil tank needs to be subjected to quenching heat treatment after the hot-press forming. After heat treatment, the surface of the front plate of the oil tank is seriously oxidized and needs sand blasting treatment to clean the surface oxide skin. The technical scheme of the prior art needs two sets of dies, namely a hot-pressing forming die and a heat treatment die, firstly uses the hot-pressing forming die to carry out hot-pressing forming processing on a heated U-shaped oil tank front plate blank, secondly heats the formed oil tank front plate again, and finally uses the heat treatment die to carry out quenching heat treatment processing on the secondarily heated oil tank front plate. After secondary heating, the deformation of the front plate of the oil tank is large, the front plate is difficult to place into a heat treatment die, and the front plate of the oil tank can only be pressed up and down by the heat treatment die for heat treatment, so that the deformation of the front plate of the oil tank after quenching heat treatment is serious. Therefore, the oil tank front plate part needs to be corrected, and the correction at normal temperature is very difficult.
Disclosure of Invention
Technical problem to be solved
The invention provides a forming and quenching composite device for a front plate of a U-shaped oil tank, which aims to solve the technical problems of serious U-shaped structure deformation, high mold cost, long processing period, low efficiency, high energy consumption and high manual labor intensity of a front plate part of the U-shaped oil tank.
(II) technical scheme
In order to solve the technical problem, the invention provides a forming and quenching composite device for a front plate of a U-shaped oil tank, which comprises an upper die assembly, an upper water spraying assembly, a lower die assembly, a lower water spraying assembly, a clamp, a guide sleeve and a guide pillar, wherein the upper die assembly is arranged on the upper die assembly; wherein the content of the first and second substances,
the upper die assembly comprises an upper die plate, a cushion block, an upper die support and an upper die rib plate; the upper die support is fixed on the lower surface of the upper die plate and positioned at the left side and the right side of the upper die rib plate, and the cushion blocks are fixed on the left side and the right side of the lower surface of the upper die plate;
the lower die assembly comprises a lower die plate, a first lower rib plate, a second lower rib plate, a lower die support and a third lower rib plate; the first lower rib plate and the third lower rib plate are respectively fixed on the upper surface of the lower template and positioned on the left side and the right side of the second lower rib plate; the lower die support is fixed at the front end of the upper surface of the lower die plate;
the upper water spraying assembly is fixed on the upper die support through a hoop, so that the upper water spraying assembly and the upper die assembly are connected into a whole; the lower water spraying assembly is fixed on the lower die support through a hoop, so that the lower water spraying assembly and the lower die assembly are connected into a whole;
the upper die assembly and the lower die assembly determine relative positions with the guide pillar through the guide sleeve; the guide sleeve is connected with a cushion block of the upper die assembly, the guide pillar is connected with a lower die plate of the lower die assembly, and the axis of the guide sleeve coincides with the axis of the guide pillar.
Further, the upper water spray assembly comprises an upper bent pipe, an upper elbow, an upper water inlet pipe, an upper blocking plate, an upper connecting pipe, a first upper water distribution pipe, an upper water spray pipe and a second upper water distribution pipe; wherein the content of the first and second substances,
one end of the upper elbow is connected and locked with the upper elbow through a bolt, and the other end of the upper elbow is fixed at the central position of the upper water inlet pipe; one side of the upper connecting pipe is fixed on the left side and the right side of the upper water inlet pipe, the other side of the upper connecting pipe is fixed on the first water dividing pipe, and two ends of the upper water spraying pipe are respectively fixed on the first water dividing pipe and the second water dividing pipe; the upper blocking plates are respectively fixed at the left end and the right end of the upper water inlet pipe, the first water distribution pipe and the second water distribution pipe; the elbow pipelines in the upper water spraying assembly are communicated with each other.
Further, the lower water spray assembly comprises a water inlet joint, a lower water inlet pipe, a lower connecting pipe, a first lower water distribution pipe, a first lower water spray pipe, a second lower water spray pipe, a communicating pipe, a second lower water distribution pipe, a second lower connecting pipe, a direct water spray assembly, an inclined water spray assembly and a lower blocking plate; wherein the content of the first and second substances,
one end of the water inlet joint is fixed at the center of the lower water inlet pipe; one end of the lower connecting pipe is fixed on the left side and the right side of the lower water inlet pipe, and the other end of the lower connecting pipe is fixed on the first water dividing pipe; two ends of the second lower water spraying pipe are respectively fixed on the first water dividing pipe and the second water dividing pipe; the two ends of the first lower water spraying pipe are fixed on the first water dividing pipe and the second water dividing pipe and are positioned at the left side and the right side of the second water spraying pipe; one end of the second connecting pipe is fixed on the left side and the right side of the first water dividing pipe and the second water dividing pipe, and the other end of the second connecting pipe is fixed on the left side and the right side of the communicating pipe; the vertical end of the direct water injection assembly is fixed on the first water spray pipe, the horizontal end of the direct water injection assembly is fixed on the communicating pipe, the oblique end of the oblique water injection assembly is fixed on the first water spray pipe, and the horizontal end of the oblique water injection assembly is fixed on the communicating pipe; the lower blocking plates are respectively fixed at the left end and the right end of the first lower water distribution pipe, the communicating pipe and the second water distribution pipe; and all pipelines in the lower water spray assembly are communicated with each other.
Furthermore, the guide sleeve is connected with a cushion block of the upper die assembly in an over-fit mode, and the guide pillar is connected with a lower die plate of the lower die assembly in an over-fit mode.
Furthermore, the water spraying pipes of the upper water spraying assembly and the lower water spraying assembly are uniformly distributed with water spraying holes.
Furthermore, the positioning blocks are respectively fixed at the foremost end of the first lower rib plate and the foremost end and the side of the third lower rib plate through bolts and used for positioning the blank in the profiling process.
(III) advantageous effects
The invention provides a forming and quenching composite device for a front plate of a U-shaped oil tank. The upper water spraying assembly is fixed on the upper die support through a hoop, the lower water spraying assembly is fixed on the lower die support through the hoop, and the upper die assembly and the lower die assembly determine relative positions with the guide pillar through the guide sleeve. The composite device integrates the hot-press forming process and the quenching heat treatment process into a whole, realizes the processing method of combining the hot-press forming process and the quenching process together and simultaneously carrying out the hot-press forming process and the quenching process, only needs heating once in the whole processing flow, carries out quenching treatment on the front plate of the hot oil tank in a die profiling state, can effectively reduce the deformation caused by heating and quenching treatment, does not need subsequent correction processes, reduces the die cost, shortens the processing period, improves the efficiency, reduces the energy consumption, reduces the deformation, and ensures the forming quality and the hardness of the front plate of the U-shaped oil tank.
Drawings
FIG. 1 is a front view of a forming and quenching composite apparatus according to an embodiment of the invention;
FIG. 2 is a front view of an upper die assembly in an embodiment of the present invention;
FIG. 3 is a bottom view of the upper die assembly in accordance with an embodiment of the present invention;
FIG. 4 is a top view of the upper spray assembly in an embodiment of the present invention
FIG. 5 is a front view of a lower die assembly in an embodiment of the present invention;
FIG. 6 is a top view of a lower die assembly in an embodiment of the present invention;
FIG. 7 is a top view of the lower spray assembly in an embodiment of the present invention;
FIG. 8 is a front view of the lower spray assembly in an embodiment of the present invention;
FIG. 9 is a top view of a sprinkler tube according to an embodiment of the present invention;
FIG. 10 is a cross-sectional view of a sprinkler tube in accordance with an embodiment of the present invention.
Wherein: 1. the water spraying device comprises an upper die assembly, a 2 upper water spraying assembly, a 3 lower die assembly, a 4 lower water spraying assembly, a 5 positioning block, a 6 hoop, a 7 guide sleeve, 8 guide pillars, 9 upper die plates, 10 cushion blocks, 11 upper die supports, 12 upper die rib plates, 13 upper bent pipes, 14 upper elbows, 15 upper water inlet pipes, 16 upper blocking plates, 17 upper connecting pipes, 18 first upper water distribution pipes, 19 upper water spraying pipes, 20 second upper water distribution pipes, 21 lower die plates, 22 first lower rib plates, 23 second lower rib plates, 24 lower die supports, 25 third lower rib plates, 26 water inlet connectors, 27 lower water inlet pipes, 28 lower connecting pipes, 29 first lower water distribution pipes, 30 first lower water spraying pipes, 31 second lower water spraying pipes, 32 communicating pipes, 33 second lower water distribution pipes, 34 second lower connecting pipes, 35 water spraying assemblies and 36 inclined water spraying assemblies, 37. and a lower blocking plate.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
The embodiment provides a forming and quenching composite device for a front plate of a U-shaped oil tank, which has a structure shown in fig. 1 and comprises an upper die assembly 1, an upper water spraying assembly 2, a lower die assembly 3, a lower water spraying assembly 4, a hoop 6, a guide sleeve 7 and a guide pillar 8.
As shown in fig. 2 and 3, the upper die assembly 1 includes an upper die plate 9, a cushion block 10, an upper die support 11 and an upper die rib plate 12. Wherein, an upper die rib plate 12 is fixedly welded on the lower surface of the upper die plate 9, an upper die support 11 is fixedly welded on the lower surface of the upper die plate 9 and is positioned at the left side and the right side of the upper die rib plate 12, and cushion blocks 10 are fixedly welded on the left side and the right side of the lower surface of the upper die plate 9.
As shown in fig. 4, the upper spray assembly 2 includes an upper elbow 13, an upper elbow 14, an upper inlet pipe 15, an upper blocking plate 16, an upper connecting pipe 17, a first upper distribution pipe 18, an upper spray pipe 19, and a second upper distribution pipe 20. Wherein, one end of the upper elbow 14 is connected and locked with the upper elbow 13 through a bolt, and the other end is welded and fixed at the central position of the upper water inlet pipe 15. One side of the upper connecting pipe 17 is welded and fixed on the left and right sides of the upper water inlet pipe 15, the other side is welded and fixed on the first water dividing pipe 18, and both ends of the upper water spray pipe 19 are respectively welded and fixed on the first water dividing pipe 18 and the second water dividing pipe 20. The plurality of upper blocking plates 16 are welded and fixed to the left and right ends of the upper water inlet pipe 15, the first water distribution pipe 18 and the second water distribution pipe 20, respectively. The elbows and pipelines in the upper water spray assembly 2 are communicated with each other.
As shown in fig. 5 and 6, the lower die assembly 3 includes a lower die plate 21, a first lower rib plate 22, a second lower rib plate 23, a lower die support 24, a third lower rib plate 25 and a positioning block 5. The second lower rib plate 23 is welded and fixed on the upper surface of the lower template 21, and the first lower rib plate 22 and the third lower rib plate 25 are respectively welded and fixed on the upper surface of the lower template 21 and located on the left side and the right side of the second lower rib plate 23. The lower die support 24 is welded and fixed at the front end of the upper surface of the lower die plate 21. The positioning blocks 5 are respectively fixed at the foremost end of the first lower rib plate 22 and the foremost end and the right side of the third lower rib plate 25 through bolts and are used for positioning blank materials in the profiling process.
As shown in fig. 7 and 8, the lower spray assembly 4 includes a water inlet joint 26, a lower water inlet pipe 27, a lower connection pipe 28, a first lower distribution pipe 29, a first lower spray pipe 30, a second lower spray pipe 31, a connection pipe 32, a second lower distribution pipe 33, a second lower connection pipe 34, a direct spray assembly 35, an inclined spray assembly 36, and a lower blocking plate 37. Wherein, one end of the water inlet joint 26 is welded and fixed at the center of the lower water inlet pipe 27. One end of the lower connection pipe 28 is welded and fixed to the left and right sides of the lower inlet pipe 27, and the other end is welded and fixed to the first water distribution pipe 29. The two ends of the second lower spray pipe 31 are welded and fixed to the first water distribution pipe 29 and the second water distribution pipe 33, respectively. The first lower spray pipe 30 has both ends welded to the first and second water distribution pipes 29 and 33 and is located on both left and right sides of the second spray pipe 31. One end of the second connecting pipe 34 is welded and fixed to the left and right sides of the first and second water distribution pipes 29 and 33, the other end is welded and fixed to the left and right sides of the communicating pipe 32, the vertical end of the direct water injection assembly 35 is welded and fixed to the first water spray pipe 30, the horizontal end is welded and fixed to the communicating pipe 32, the oblique end of the oblique water injection assembly 36 is welded and fixed to the first water spray pipe 30, and the horizontal end is welded and fixed to the communicating pipe 32. The plurality of lower blocking plates 37 are welded and fixed to the left and right ends of the first lower water distribution pipe 29, the communication pipe 32, and the second water distribution pipe 33, respectively. And all pipelines in the lower water spray assembly 4 are communicated with each other.
The first upper water distribution pipe 18 of the upper water spray assembly 2 is fixed on the upper die support 11 through a hoop 6, so that the upper water spray assembly 2 and the upper die assembly 1 are connected into a whole. The first lower water spraying pipe 30 of the lower water spraying assembly 4 is fixed on the lower die support 24 through the hoop 6, so that the lower water spraying assembly 4 and the lower die assembly 3 are connected into a whole.
The upper die assembly 1 and the lower die assembly 3 determine relative positions with the guide post 8 through the guide sleeve 7. The guide sleeve 7 is connected with a cushion block 10 of the upper die assembly 1 in an over-fit mode, the guide pillar 8 is connected with a lower die plate 21 of the lower die assembly 3 in an over-fit mode, and the axis of the guide sleeve 7 coincides with the axis of the guide pillar 8.
The upper water spraying assembly 2 and the lower water spraying assembly 4 are connected into a whole in a welding mode. Each of the spray pipes has spray holes with a diameter of 3mm uniformly distributed thereon, as shown in fig. 9 and 10. When quenching, cooling water enters from the water inlet pipe, is distributed into the water spray pipes through the water distribution pipe and is sprayed out from the water spray holes, and the sprayed cooling water uniformly and directly acts on the front plate of the U-shaped oil tank to achieve the quenching effect. The straight water spraying assembly 35 and the inclined water spraying assembly 36 form a three-dimensional water spraying structure, cooling water is uniformly sprayed out from the water spraying pipes and acts on the vertical edge, the arc and the plane of the front plate of the oil tank, so that the whole front plate of the oil tank is uniformly quenched, and the whole U-shaped front plate of the oil tank can meet the hardness requirement.
When parts are machined, the upper die assembly 1 and the upper water spray assembly 2 go down together, the upper die rib plate 12, the first lower rib plate 22, the second lower rib plate 23 and the third lower rib plate 25 act on a U-shaped oil tank front plate blank together in the descending process to enable the oil tank front plate to be in a U-shaped structure, the forming effect is achieved, after short pressure maintaining, cooling water is conducted, water cooling water sprayed out of a water spray pipe acts on the oil tank front plate blank to be quenched, the oil tank front plate achieves required hardness, a die is always in a pressure maintaining state in the quenching process, the upper die rib plate and the lower die rib plate fix the position of the oil tank front plate blank, the oil tank front plate cannot deform in the quenching process, profiling quenching is completed at one time, and heat treatment hardness and the forming quality of the U-shaped structure of the oil tank front plate are guaranteed.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A forming and quenching composite device for a front plate of a U-shaped oil tank is characterized by comprising an upper die assembly, an upper water spraying assembly, a lower die assembly, a lower water spraying assembly, a hoop, a guide sleeve and a guide pillar; wherein the content of the first and second substances,
the upper die assembly comprises an upper die plate, a cushion block, an upper die support and an upper die rib plate; the upper die support is fixed on the lower surface of the upper die plate and positioned at the left side and the right side of the upper die rib plate, and the cushion blocks are fixed on the left side and the right side of the lower surface of the upper die plate;
the lower die assembly comprises a lower die plate, a first lower rib plate, a second lower rib plate, a lower die support and a third lower rib plate; the first lower rib plate and the third lower rib plate are respectively fixed on the upper surface of the lower template and positioned on the left side and the right side of the second lower rib plate; the lower die support is fixed at the front end of the upper surface of the lower die plate;
the upper water spraying assembly is fixed on the upper die support through a hoop, so that the upper water spraying assembly and the upper die assembly are connected into a whole; the lower water spraying assembly is fixed on the lower die support through a hoop, so that the lower water spraying assembly and the lower die assembly are connected into a whole;
the upper die assembly and the lower die assembly determine relative positions with the guide pillar through the guide sleeve; the guide sleeve is connected with a cushion block of the upper die assembly, the guide pillar is connected with a lower die plate of the lower die assembly, and the axis of the guide sleeve coincides with the axis of the guide pillar.
2. The form-quenching composite apparatus of claim 1, wherein the upper spray assembly comprises an upper elbow, an upper inlet pipe, an upper blanking plate, an upper connecting pipe, a first upper water distribution pipe, an upper spray pipe, and a second upper water distribution pipe; wherein the content of the first and second substances,
one end of the upper elbow is connected and locked with the upper elbow through a bolt, and the other end of the upper elbow is fixed at the central position of the upper water inlet pipe; one side of the upper connecting pipe is fixed on the left side and the right side of the upper water inlet pipe, the other side of the upper connecting pipe is fixed on the first water dividing pipe, and two ends of the upper water spraying pipe are respectively fixed on the first water dividing pipe and the second water dividing pipe; the upper blocking plates are respectively fixed at the left end and the right end of the upper water inlet pipe, the first water distribution pipe and the second water distribution pipe; the elbow pipelines in the upper water spraying assembly are communicated with each other.
3. The form-quenching composite apparatus of claim 1, wherein the lower spray assembly comprises a water inlet joint, a lower water inlet pipe, a lower connection pipe, a first lower water distribution pipe, a first lower spray pipe, a second lower spray pipe, a communication pipe, a second lower water distribution pipe, a second lower connection pipe, a direct spray assembly, an oblique spray assembly, and a lower closure plate; wherein the content of the first and second substances,
one end of the water inlet joint is fixed at the center of the lower water inlet pipe; one end of the lower connecting pipe is fixed on the left side and the right side of the lower water inlet pipe, and the other end of the lower connecting pipe is fixed on the first water dividing pipe; two ends of the second lower water spraying pipe are respectively fixed on the first water dividing pipe and the second water dividing pipe; the two ends of the first lower water spraying pipe are fixed on the first water dividing pipe and the second water dividing pipe and are positioned at the left side and the right side of the second water spraying pipe; one end of the second connecting pipe is fixed on the left side and the right side of the first water dividing pipe and the second water dividing pipe, and the other end of the second connecting pipe is fixed on the left side and the right side of the communicating pipe; the vertical end of the direct water injection assembly is fixed on the first water spray pipe, the horizontal end of the direct water injection assembly is fixed on the communicating pipe, the oblique end of the oblique water injection assembly is fixed on the first water spray pipe, and the horizontal end of the oblique water injection assembly is fixed on the communicating pipe; the lower blocking plates are respectively fixed at the left end and the right end of the first lower water distribution pipe, the communicating pipe and the second water distribution pipe; and all pipelines in the lower water spray assembly are communicated with each other.
4. The composite mold quench apparatus of claim 1, wherein the guide sleeves are connected to the spacers of the upper mold assembly in an overfitting manner and the guide posts are connected to the lower mold plate of the lower mold assembly in an overfitting manner.
5. The composite quench and mold hardening apparatus of claim 1, wherein the water spray pipes of the upper and lower water spray assemblies have water spray holes distributed uniformly.
6. The forming and quenching composite device according to claim 1, wherein positioning blocks are respectively fixed at the foremost end of the first lower rib plate and the foremost end and the side of the third lower rib plate through bolts and used for positioning blank materials in the profiling process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210015881.9A CN114309214A (en) | 2022-01-07 | 2022-01-07 | U-shaped oil tank front plate forming and quenching composite device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210015881.9A CN114309214A (en) | 2022-01-07 | 2022-01-07 | U-shaped oil tank front plate forming and quenching composite device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114309214A true CN114309214A (en) | 2022-04-12 |
Family
ID=81025258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210015881.9A Pending CN114309214A (en) | 2022-01-07 | 2022-01-07 | U-shaped oil tank front plate forming and quenching composite device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114309214A (en) |
-
2022
- 2022-01-07 CN CN202210015881.9A patent/CN114309214A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102554048A (en) | Method for forming variable-strength hot stamping parts by ultrahigh-strength steel | |
| CN201783542U (en) | Quick flat iron bending device | |
| CN104439972B (en) | A kind of mammoth conveter is deducted marks two lobe preparation methods | |
| CN204711008U (en) | A kind of 22MnB5 boron steel U-shaped heat stamping and shaping cooling experiment mould | |
| CN216937892U (en) | U-shaped oil tank front plate forming and quenching composite device | |
| CN102228940A (en) | Thermal forming die for high-strength steel plates | |
| CN114309214A (en) | U-shaped oil tank front plate forming and quenching composite device | |
| CN100467931C (en) | Method for making arrangement type rustless steel water separator | |
| CN207521576U (en) | A kind of thin wall type metal tube thermalization pipe-expanding device | |
| CN103386444A (en) | Cooling liquid direct cooling process and device of thermal forming mold based on boron steel plates | |
| CN104191174B (en) | Hot bending-quenching compound forming technology for lower front arc deck | |
| CN214291310U (en) | Water-cooling circulation cooling system for welding wear-resisting plate | |
| CN108435919B (en) | Method for obtaining hot stamping parts with various strengths and cooling system | |
| CN216114838U (en) | Water circulation cooling equipment for processing anticorrosive steel pipe | |
| CN221109640U (en) | U-shaped bottom deck forming quenching and shaping device | |
| CN109731980B (en) | High-temperature air pressure bulging process for high-strength steel non-closed part | |
| CN201436093U (en) | Continuous casting billet dephosphorizing device for bar and wire | |
| CN103132008A (en) | Induction heater and method for realizing non-preheating cladding of alloy on steel rail by using same | |
| CN204898012U (en) | Formula saw bit quenching line at bottom of roller | |
| CN208978296U (en) | A kind of elevating mechanism of sweating welder heating plate | |
| CN117733012A (en) | U-shaped bottom deck forming quenching and shaping device | |
| CN203125046U (en) | Paired welding and heat treatment device for water-cooled wall bottom cone | |
| CN206966937U (en) | Wearing plate built-up welding platform clamping apparatus | |
| CN105583249B (en) | One kind is using seamless steel pipe cold-extruded processing ball head tube integrated mould and technique | |
| CN108161353B (en) | A kind of uniform integrally formed method of large aluminum alloy tailor welded end socket of performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |