CN113969342A - Machining process of casting part - Google Patents

Machining process of casting part Download PDF

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Publication number
CN113969342A
CN113969342A CN202111269849.5A CN202111269849A CN113969342A CN 113969342 A CN113969342 A CN 113969342A CN 202111269849 A CN202111269849 A CN 202111269849A CN 113969342 A CN113969342 A CN 113969342A
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CN
China
Prior art keywords
fixedly connected
furnace body
rod
support
connecting rod
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CN202111269849.5A
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Chinese (zh)
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CN113969342B (en
Inventor
陆建忠
邱伟东
李伟峰
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ZHEJIANG HONGMA FOUNDRY CO Ltd
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ZHEJIANG HONGMA FOUNDRY CO Ltd
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Publication of CN113969342A publication Critical patent/CN113969342A/en
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0025—Supports; Baskets; Containers; Covers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

The invention provides a processing technology of a casting part, which comprises the following steps of designing a die; smelting; cleaning fallen sand; treating the surface of a workpiece; carrying out heat treatment on the workpiece with the treated surface; shot blasting is carried out on the surface of the workpiece; polishing; the heat treatment furnace in the fifth step comprises a support, a furnace body is arranged on the support, two rails are fixedly connected on the ground, a loading trolley is connected on the rails in a sliding mode, a layer of refractory bricks is laid on the upper surface of the loading trolley, the lower end of the furnace body is communicated with the outside, a driving mechanism for driving the furnace body to move up and down is arranged on the support, and the lower surface of the furnace body is placed on the upper surface of the loading trolley during heat treatment.

Description

Machining process of casting part
Technical Field
The invention belongs to the technical field of casting part processes, and particularly relates to a machining process of a casting part.
Background
Casting is a relatively early metal hot working process mastered by human beings, and has a history of about 6000 years. China has entered the full prosperity of bronze castings between about 1700 and the first 1000 b.c., and has achieved a fairly high level of technology. Casting is a method in which liquid metal is cast into a casting cavity that conforms to the shape of a part, and after it is cooled and solidified, a part or a blank is obtained. The casting material is mostly metal (such as copper, iron, aluminum, tin, lead, etc.) which is originally solid but is heated to liquid state, and the material of the casting mold can be sand, metal or even ceramic. The method used may be different according to different requirements.
The existing casting process is characterized in that an operator injects molten raw materials into a mold, the raw materials are cooled and shaped in the mold, then a finished product needs to be subjected to surface treatment, the mold needs to be subjected to heat treatment after the treatment is completed, the existing heat treatment is usually carried out through a heat treatment furnace, the existing heat treatment furnace is usually provided with one end and a lower end opening, then a closed door is arranged at the opening at one end, and then the side wall of a trolley provided with a casting piece is attached to the inner wall of the lower end of the heat treatment furnace.
After the existing heat treatment furnace is used for a long time, a gap between the heat treatment furnace and the trolley becomes large, so that when the heat treatment furnace is used for carrying out heat treatment on a workpiece, heat in the heat treatment furnace is lost from the gap, and the energy consumption is increased.
Disclosure of Invention
The invention aims to solve the problems in the prior art, provides a processing technology of a casting part, and has the characteristics of improving the sealing property between a furnace body and a loading trolley and reducing the heat loss in the furnace body.
The purpose of the invention can be realized by the following technical scheme:
a machining process of a casting part comprises the following steps of firstly, designing a die, designing the die according to requirements, and manufacturing the die; smelting, namely melting raw material steel, pouring the molten raw material steel into a mold, and cooling the molten raw material steel after pouring; thirdly, cleaning falling sand, namely cleaning the falling sand on the outer wall of the workpiece; step four, processing the surface of the workpiece, and performing gas cutting and welding repair on the redundant part of the surface of the workpiece; step five, carrying out heat treatment on the workpiece with the processed surface, and carrying out heat treatment on the workpiece through a heat treatment furnace; performing shot blasting on the surface of the workpiece, and performing shot blasting on the surface of the workpiece through a shot blasting machine; step seven, polishing, namely further polishing the surface of the workpiece by using a handheld polishing machine; the heat treatment furnace in the fifth step comprises a support, a furnace body is installed on the support, two rails are fixedly connected to the ground, a loading trolley is connected to the rails in a sliding mode, a layer of refractory bricks is laid on the upper surface of the loading trolley, the lower end of the furnace body is communicated with the outside, a driving mechanism used for driving the furnace body to move up and down is arranged on the support, and during heat treatment, the lower surface of the furnace body is placed on the upper surface of the loading trolley.
Furthermore, a fireproof cotton layer is fixedly connected to the lower surface of the furnace body, and the furnace body is tightly supported on the loading trolley through the fireproof cotton layer.
Furthermore, actuating mechanism includes two hoist engines of fixed connection on the support, two rings of fixed connection on the furnace body upper surface, fixed connection locating lever and the holding ring of fixed connection on the furnace body lateral wall on the support, locating lever sliding connection is in the locating lever, wire rope's on the hoist engine one end fixed connection is on rings.
Furthermore, all rotate on furnace body both ends terminal surface and be connected with a dwang, serve a fixedly connected with mounting panel at a dwang, a fixedly connected with closure plate between two mounting panels, be the clearance setting between closure plate upper surface and the furnace body lower surface, be equipped with between support and dwang and be used for driving dwang pivoted driving piece.
Further, the driving piece includes drive gear and the drive rack of fixed connection on the support of fixed connection on the dwang outer wall, the drive rack is vertical setting and meshes between drive rack and the drive gear.
Furthermore, a support frame is fixedly connected to the end faces of the two ends of the furnace body, two sliding rods are fixedly connected to the support frame, a sliding groove is formed in each of the opposite faces of the two sliding rods, a sliding plate is connected to the two sliding grooves in a sliding mode, one end of the rotating rod is rotatably connected to the sliding plate, and a connecting mechanism used for driving the sliding plate to move upwards when the furnace body moves upwards is arranged between the support frame and the support frame.
Further, coupling mechanism includes connecting rod of fixed connection on the support frame, rotates connecting rod, the branch of fixed connection on the support on the connecting rod, the connecting plate on one side lateral wall that the dwang was kept away from to fixed connection on the sliding plate, branch is vertical setting and branch lower extreme and connecting rod one end alignment, the connecting rod is greater than the connecting rod to the one end distance that the connecting rod was close to branch to the one end distance that the connecting rod was kept away from the one end of branch, and fixedly connected with balancing weight on the one end lower surface that branch was kept away from to the connecting rod a baffle of fixedly connected with on the furnace body outer wall, the one end butt that the connecting rod was close to branch are on the baffle lower surface, the connecting rod is the slope setting and the one end butt that the connecting rod kept away from branch is on the connecting plate lower surface.
Furthermore, a first groove is formed in the end face, away from the supporting rod, of the connecting rod, a first roller is connected in the first groove in a rotating mode, a second groove is formed in the lower surface of the supporting rod, and a second roller is connected in the second groove in a rotating mode.
Compared with the prior art, the invention has the following advantages:
1. according to the invention, the workpieces are stacked on the loading trolley, the loading trolley is moved to a preset place, the furnace body is driven to move downwards by the driving mechanism, the lower surface of the furnace body abuts against the upper surface of the loading trolley, and through the arrangement, the structure is simple, the operation is convenient, the sealing property between the furnace body and the loading trolley is improved, and the heat loss in the furnace body is reduced.
2. According to the invention, after the workpieces are processed, the driving mechanism drives the furnace body to move upwards, the driving gear is meshed with the driving rack, the driving rack drives the driving gear to move, the driving gear drives the rotating rod to move, the rotating rod drives the mounting plate to move, the mounting plate drives the sealing plate to move, and the sealing plate moves to the lower part of the furnace body.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the driving member of the present invention.
Fig. 3 is a schematic view of the structure of the back side of the sliding plate in the present invention.
In the figure, 1, a bracket; 2. a furnace body; 3. a track; 4. loading a trolley; 5. a refractory brick; 6. a drive mechanism; 7. a fireproof cotton layer; 8. a winch; 9. a hoisting ring; 10. positioning a rod; 11. a positioning ring; 12. rotating the rod; 13. mounting a plate; 14. a closing plate; 15. a drive member; 16. a drive gear; 17. a drive rack; 18. a support frame; 19. a slide bar; 20. a chute; 21. a sliding plate; 22. a connecting mechanism; 23. a connecting rod; 24. a connecting rod; 25. a strut; 26. a connecting plate; 27. a balancing weight; 28. a baffle plate; 29. a first groove; 30. a first roller; 31. a second groove; 32. a second roller.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, a machining process of a casting includes the following steps:
designing a mold, namely designing the mold according to needs and manufacturing the mold;
smelting, namely melting raw material steel, pouring the molten raw material steel into a mold, and cooling the molten raw material steel after pouring;
thirdly, cleaning falling sand, namely cleaning the falling sand on the outer wall of the workpiece;
step four, processing the surface of the workpiece, and performing gas cutting and welding repair on the redundant part of the surface of the workpiece;
step five, carrying out heat treatment on the workpiece with the processed surface, and carrying out heat treatment on the workpiece through a heat treatment furnace;
performing shot blasting on the surface of the workpiece, and performing shot blasting on the surface of the workpiece through a shot blasting machine;
and step seven, polishing, namely further polishing the surface of the workpiece by using a handheld polishing machine.
As shown in fig. 2, the heat treatment furnace in the fifth step includes a support 1, a furnace body 2 is installed on the support 1, two slide rails are fixedly connected to the ground, a loading trolley 4 is slidably connected to the rails 3, a layer of refractory bricks 5 is laid on the loading trolley 4, the furnace body 2 is hollow inside, the lower end of the furnace body is communicated with the outside, a driving mechanism 6 for driving the furnace body 2 to move up and down is arranged on the support 1, a workpiece is placed on the loading trolley 4, and the lower surface of the furnace body 2 abuts against the loading trolley 4.
As shown in fig. 1 and 2, the driving mechanism 6 comprises a winch 8, a lifting ring 9, a positioning rod 10 and a positioning ring 11, the winch 8 is fixedly connected to the upper surface of the support 1, two winches 8 are fixedly connected to the upper surface of the support 1, the lifting ring 9 is fixedly connected to the upper surface of the furnace body 2, two lifting rings 9 are fixedly connected to the upper surface of the furnace body 2, one end of a steel wire rope on the winch 8 is fixedly connected to the lifting ring 9, the positioning rod 10 is fixedly connected to the support 1, the positioning rod 10 is vertically arranged, the positioning ring 11 is fixedly connected to the side wall of the furnace body 2, and the positioning rod 10 is slidably connected to the positioning ring 11.
As shown in figure 1, in order to improve the sealing performance between the furnace body 2 and the loading trolley 4, a fireproof cotton layer 7 is fixedly connected to the lower surface of the furnace body 2, and the furnace body 2 is tightly pressed against the upper surface of the loading trolley 4 through the fireproof cotton layer 7.
As shown in fig. 1 and 2, a rotating rod 12 is rotatably connected to end faces of two ends of the furnace body 2, an installation plate 13 is fixedly connected to one end of the rotating rod 12, a sealing plate 14 is fixedly connected between the two installation plates 13, a gap is formed between the sealing plate 14 and the lower surface of the furnace body 2, and a driving member 15 for driving the rotating rod 12 to rotate is arranged between the support 1 and the rotating rod 12.
As shown in fig. 1 and 2, the driving member 15 includes a driving gear 16 and a driving rack 17, the driving rack 17 is fixedly connected to the bracket 1, the driving rack 17 is arranged along the vertical direction, the driving gear 16 is fixedly connected to the outer wall of the rotating rod 12, and the driving rack 17 is meshed with the driving gear 16.
As shown in fig. 1, fig. 2, and fig. 3, in order to facilitate an operator to abut against the sealing plate 14 on the lower surface of the furnace body 2, a supporting frame 18 is fixedly connected to end faces of two ends of the furnace body 2, two sliding rods 19 are fixedly connected to the supporting frame 18, the two sliding rods 19 are vertically arranged and arranged in parallel, a sliding groove 20 is formed in each of opposite faces of the two sliding rods 19, a sliding plate 21 is slidably connected to the two sliding grooves 20, one end of the rotating rod 12 is rotatably connected to the sliding plate 21, and a connecting mechanism 22 for driving the sliding plate 21 to move upwards when the furnace body 2 moves upwards is arranged between the supporting frame 18 and the support 1.
As shown in fig. 1, 2 and 3, the connecting mechanism 22 includes a connecting rod 23, a connecting rod 24, a supporting rod 25 and a connecting plate 26, the connecting rod 23 is fixedly connected to the supporting frame 18, the connecting rod 24 is rotatably connected to the connecting rod 23, the connecting rod 24 and the connecting rod 23 are vertically arranged, one end of the supporting rod 25 is fixedly connected to the bracket 1, the supporting rod 25 is vertically arranged, the distance from the connecting rod 23 to the end of the connecting rod 24 close to the supporting rod 25 is smaller than the distance from the connecting rod 23 to the end of the connecting rod 24 away from the supporting rod 25, the lower end of the supporting rod 25 is aligned with one end of the connecting rod 24, the connecting plate 26 is fixedly connected to the side wall of the sliding plate 21 away from the rotating rod 12, a counterweight block 27 is fixedly connected on the lower surface of one end of the connecting rod 24 far away from the supporting rod 25, a baffle plate 28 is fixedly connected on the outer wall of the furnace body 2, under the action of the weight 27, the end of the connecting rod 24 remote from the rod 25 abuts against the lower surface of the connecting plate 26.
As shown in fig. 1, 2 and 3, in order to improve the motion stability of the connecting rod 24 driven by the supporting rod 25, a second groove 31 is formed on the end surface of the lower end of the supporting rod 25, a second roller 32 is rotatably connected between the inner walls of the two sides of the second groove 31, the second roller 32 abuts against the outer wall of the connecting rod 24, in order to improve the motion stability of the connecting rod 24 driving the connecting plate 26, a first groove 29 is formed on the end surface of one end of the connecting rod 24, a first roller 30 is rotatably connected between the inner walls of the two sides of the first groove 29, and the first roller 30 abuts against the lower surface of the connecting plate 26.
The working principle of the embodiment of the invention is as follows: stacking the workpieces on the loading trolley 4, driving the loading trolley 4 to a preset place, driving the furnace body 2 to move downwards by the winch 8, and enabling the furnace body 2 to abut against the upper surface of the loading trolley 4;
after the heat treatment is finished, the winch 8 drives the furnace body 2 to move upwards, the driving gear 16 is meshed with the driving rack 17, the driving gear 16 rotates, the driving gear 16 drives the rotating rod 12 to move, the rotating rod 12 drives the mounting plate 13 to rotate, the mounting plate 13 drives the sealing plate 14 to move, the sealing plate 14 moves to the lower side of the furnace body 2, at the moment, the driving gear 16 is separated from the driving rack 17, the second idler wheel 32 on one end of the support rod 25 abuts against one end of the connecting rod 24, the support rod 25 drives the connecting rod 24 to rotate, the connecting rod 24 drives the sliding plate 21 to slide upwards, the sliding plate 21 drives the rotating rod 12 to move upwards, the rotating rod 12 drives the sealing plate 14 to move upwards through the mounting plate 13, and the sealing plate 14 abuts against the lower surface of the furnace body 2.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims (8)

1. A machining process of a casting part is characterized by comprising the following steps,
designing a mold, namely designing the mold according to needs and manufacturing the mold;
smelting, namely melting raw material steel, pouring the molten raw material steel into a mold, and cooling the molten raw material steel after pouring;
thirdly, cleaning falling sand, namely cleaning the falling sand on the outer wall of the workpiece;
step four, processing the surface of the workpiece, and performing gas cutting and welding repair on the redundant part of the surface of the workpiece;
step five, carrying out heat treatment on the workpiece with the processed surface, and carrying out heat treatment on the workpiece through a heat treatment furnace;
performing shot blasting on the surface of the workpiece, and performing shot blasting on the surface of the workpiece through a shot blasting machine;
step seven, polishing, namely further polishing the surface of the workpiece by using a handheld polishing machine;
the heat treatment furnace in the fifth step comprises a support (1), a furnace body (2) is installed on the support (1), two rails (3) are fixedly connected to the ground, a loading trolley (4) is connected to the rails (3) in a sliding mode, a layer of refractory bricks (5) is laid on the upper surface of the loading trolley (4), the lower end of the furnace body (2) is communicated with the outside, a driving mechanism (6) used for driving the furnace body (2) to move up and down is arranged on the support (1), and when in heat treatment, the lower surface of the furnace body (2) is placed on the upper surface of the loading trolley (4).
2. A casting machining process according to claim 1, characterized in that a fireproof cotton layer (7) is fixedly connected to the lower surface of the furnace body (2), and the furnace body (2) is tightly supported on the loading trolley (4) through the fireproof cotton layer (7).
3. The machining process of the casting part according to claim 1, wherein the driving mechanism (6) comprises two winches (8) fixedly connected to the support (1), two lifting rings (9) fixedly connected to the upper surface of the furnace body (2), a positioning rod (10) fixedly connected to the support (1), and a positioning ring (11) fixedly connected to the side wall of the furnace body (2), wherein the positioning rod (10) is slidably connected to the positioning rod (10), and one end of a steel wire rope on the winches (8) is fixedly connected to the lifting rings (9).
4. A casting machining process according to claim 1, characterized in that a rotating rod (12) is rotatably connected to the end surfaces of the two ends of the furnace body (2), a mounting plate (13) is fixedly connected to one end of the rotating rod (12), a closing plate (14) is fixedly connected between the two mounting plates (13), the upper surface of the closing plate (14) and the lower surface of the furnace body (2) are arranged in a gap, and a driving member (15) for driving the rotating rod (12) to rotate is arranged between the support (1) and the rotating rod (12).
5. A casting element machining process as claimed in claim 4, wherein the driving member (15) comprises a driving gear (16) fixedly connected to the outer wall of the rotating rod (12) and a driving rack (17) fixedly connected to the support (1), the driving rack (17) is vertically arranged and the driving rack (17) and the driving gear (16) are meshed with each other.
6. The machining process of the casting part according to claim 5, wherein a support frame (18) is fixedly connected to end faces of two ends of the furnace body (2), two sliding rods (19) are fixedly connected to the support frame (18), sliding grooves (20) are formed in opposite faces of the two sliding rods (19), a sliding plate (21) is connected to the two sliding grooves (20) in a sliding mode, one end of the rotating rod (12) is rotatably connected to the sliding plate (21), and a connecting mechanism (22) used for driving the sliding plate (21) to move upwards when the furnace body (2) moves upwards is arranged between the support frame (18) and the support frame (1).
7. The machining process of the casting part as claimed in claim 6, wherein the connecting mechanism (22) comprises a connecting rod (23) fixedly connected to the supporting frame (18), a connecting rod (24) rotatably connected to the connecting rod (23), a supporting rod (25) fixedly connected to the supporting frame (1), and a connecting plate (26) fixedly connected to a side wall of the sliding plate (21) on one side far away from the rotating rod (12), the supporting rod (25) is vertically arranged, the lower end of the supporting rod (25) is aligned with one end of the connecting rod (24), the distance from the connecting rod (23) to the end of the connecting rod (24) far away from the supporting rod (25) is greater than the distance from the connecting rod (23) to the end of the connecting rod (24) close to the supporting rod (25), a balancing weight (27) is fixedly connected to the lower surface of the end of the connecting rod (24) far away from the supporting rod (25), and a baffle (28) is fixedly connected to the outer wall of the furnace body (2), one end of the connecting rod (24) close to the support rod (25) is abutted on the lower surface of the baffle plate (28), the connecting rod (24) is obliquely arranged, and one end of the connecting rod (24) far away from the support rod (25) is abutted on the lower surface of the connecting plate (26).
8. A casting machining process according to claim 7, characterized in that a first groove (29) is formed in an end face of the connecting rod (24) away from the support rod (25), a first roller (30) is rotatably connected to the first groove (29), a second groove (31) is formed in the lower surface of the support rod (25), and a second roller (32) is rotatably connected to the second groove (31).
CN202111269849.5A 2021-10-29 2021-10-29 Machining process of casting Active CN113969342B (en)

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Application Number Priority Date Filing Date Title
CN202111269849.5A CN113969342B (en) 2021-10-29 2021-10-29 Machining process of casting

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Application Number Priority Date Filing Date Title
CN202111269849.5A CN113969342B (en) 2021-10-29 2021-10-29 Machining process of casting

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CN113969342A true CN113969342A (en) 2022-01-25
CN113969342B CN113969342B (en) 2023-08-22

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008229467A (en) * 2007-03-20 2008-10-02 Daifuku Co Ltd Heat treatment apparatus
CN108927492A (en) * 2018-08-16 2018-12-04 全椒县全动机械有限公司 A kind of cast steel intermediate product of diesel engine manufacturing process
CN111637738A (en) * 2020-06-05 2020-09-08 北京北方华创微电子装备有限公司 Furnace door control device for vertical furnace and vertical furnace
CN214193369U (en) * 2020-12-25 2021-09-14 河南沃福德环保科技有限公司 Trolley type resistance furnace with furnace body capable of being positioned and lifted

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008229467A (en) * 2007-03-20 2008-10-02 Daifuku Co Ltd Heat treatment apparatus
CN108927492A (en) * 2018-08-16 2018-12-04 全椒县全动机械有限公司 A kind of cast steel intermediate product of diesel engine manufacturing process
CN111637738A (en) * 2020-06-05 2020-09-08 北京北方华创微电子装备有限公司 Furnace door control device for vertical furnace and vertical furnace
CN214193369U (en) * 2020-12-25 2021-09-14 河南沃福德环保科技有限公司 Trolley type resistance furnace with furnace body capable of being positioned and lifted

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