CN203346442U - Bottom roller of solid-melting annealing furnace - Google Patents
Bottom roller of solid-melting annealing furnace Download PDFInfo
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- CN203346442U CN203346442U CN 201320210718 CN201320210718U CN203346442U CN 203346442 U CN203346442 U CN 203346442U CN 201320210718 CN201320210718 CN 201320210718 CN 201320210718 U CN201320210718 U CN 201320210718U CN 203346442 U CN203346442 U CN 203346442U
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- joint pin
- pilot hole
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Abstract
The utility model discloses a bottom roller of a solid-melting annealing furnace. The bottom roller comprises a cylinder body, a left shaft body and a right shaft body, wherein the left shaft body is welded at the left end of the cylinder body, and the left end of the left shaft body extends into the cylinder body; the right shaft body is welded at the right end of the cylinder, and the right end of the right cylinder extends into the cylinder body; one end of the left shaft body extends into the cylinder body and is welded and fixed with the cylinder body; a left positioning hole penetrating through the wall of the cylinder body and going deep into the left shaft body is formed in the left end of the cylinder body; one end of the right shaft body extends into the cylinder body and is welded and fixed with the cylinder body; a right positioning hole penetrating through the wall of the cylinder body and going deep into the right shaft body is formed in the right end of the cylinder body; and a left connecting pin and a right connecting pin are arranged in the left positioning hole and the right positioning hole. According to the bottom roller of the solid-melting annealing furnace, the structure is more reasonable, the structural strength is high, the service life is long, rupture phenomena are few, the working efficiency of the annealing furnace is improved, and the cost is reduced.
Description
Technical field
The utility model relates to the steel pipe processing technique field, relates in particular a kind of furnace bottom roll of solution annealing stove.
Background technology
Furnace bottom roll is one of topmost part of continuous annealing furnace, furnace bottom roll will rotate under effect in the stove more than 800 ℃ at full capacity in temperature, be subject to again the mechanical injuries of furnace charge, therefore, the furnace bottom roll material will have higher hot strength and antioxidant property, and the quality of its working condition is that can annealing furnace carry out normal deciding factor of producing.
The Chinese utility model patent that patent publication No. is CN202836219U, be on March 27th, 2013 in open day discloses a kind of furnace bottom roll, it comprises mandrel and is sleeved on pottery or the carbon roller shell on mandrel, also comprise the permanent sleeve that is sleeved on mandrel, is positioned at pottery or carbon roller shell two ends, described mandrel, pottery or carbon roller shell and permanent sleeve connect as one by trundle.
But phenomenon of rupture, often appear in existing furnace bottom roll in process of production, this seriously hinders rhythm of production, strengthens the gas energy cost, is unfavorable for cost efficiency.
The utility model content
The purpose of this utility model is for the deficiencies in the prior art part, and a kind of solution annealing stove furnace bottom roll is provided, and can overcome the deficiencies in the prior art part, structure is more reasonable, and structural strength is high, long service life, phenomenon of rupture is few, has improved the working efficiency of annealing furnace, has reduced cost.
In order to solve the problems of the technologies described above, the technical solution of the utility model is as follows: solution annealing stove furnace bottom roll, comprise cylindrical shell, be welded on described cylindrical shell left end and left end stretch into the left axis body in described cylindrical shell and be welded on described cylindrical shell right-hand member and right-hand member stretch in described cylindrical shell right axis body, described left axis body one end stretches in described cylindrical shell and fixes with described barrel soldering, and described cylindrical shell left end is provided with through described cylindrical shell barrel and gos deep into left pilot hole in described left axis body; Described right axis body one end stretches in described cylindrical shell and fixes with described barrel soldering, and described cylindrical shell right-hand member is provided with through described cylindrical shell barrel and gos deep into the right pilot hole in described right axis body, is provided with left joint pin, right joint pin in described left pilot hole, right pilot hole.
Furnace bottom roll of the present utility model, left axis body and right axis body all some axis body go deep in cylindrical shell, with shell portion, be welded and fixed again, simultaneously, left joint pin and right joint pin are set again, guarantee that left axis body, right axis body and cylindrical shell firmly are fixed into one, rigidity, intensity all are protected, improve its long service life, reduced phenomenon of rupture.
As preferably, as preferably, it is that the 1.8-1.9 of built-in length doubly adds 4mm that described left axis body, right axis body stretch into axis body diameter in described cylindrical shell.
The applicant finds through research, and above-mentioned the setting can be improved the stability that left axis body, right axis body are connected with cylindrical shell.
As preferably, described left joint pin, right joint pin are made by ZG4Cr28Ni48W5Si2, and described cylindrical shell is made by ZGCr28Ni48W5Re, and described left axis body and right axis body are made by Cr25Ni20Si2.
The applicant is through the research discovery, and the combination of above-mentioned materials, can improve the firm performance that left axis body, right axis body are connected with cylindrical shell, reduced phenomenon of rupture.
Described left pilot hole and/or described right pilot hole port are provided with described left joint pin and/or all or part of left layer be closed of described right joint pin and/or backhand welding layer.
The applicant in use finds, in use, left joint pin, right joint pin exit phenomenon, cause the axis body phenomenon of rupture, and for this reason, we are reversed by layer, placing joint pin, reduces fracture probability
As preferably, described left axis body and right axis body are solid axis body, and described cylindrical shell is provided with venting hole.
Above-mentioned setting, both improved left axis body and right axis structure intensity, reduced the fracture probability after the welding, simultaneously, the setting of venting hole, energy normal exhaust in the time of can either making cylindrical shell use under the condition of high temperature, solve exhausting problem, avoided again from annealing furnace annealing pipe out to be scratched.
As preferably, the quantity of described left pilot hole is three, and adjacent two left pilot holes become 120 ° of angles; The quantity of described right pilot hole is three, and adjacent two right pilot holes become 120 ° of angles.
As preferably, described left joint pin, right joint pin are taper pin, and described left pilot hole, right pilot hole are straight hole, and the diameter of described left pilot hole, right pilot hole is than described left joint pin, the little 0.05-0.1mm of right joint pin nominal diameter.
The applicant in use finds, after adopting above-mentioned measure, although decrease the probability of furnace bottom roll fracture, but, phenomenon of rupture still exists, do not stopped, the applicant has carried out a large amount of research and experiment, the applicant has started simple increasing left joint pin, the diameter of right joint pin, but effect is obvious not, the straight pin that the applicant will use again originally changes tapered pin into, coordinate tapered hole, effect is still obvious not, the applicant found afterwards, joint pin is worked under hot environment, temperature is over 800 ℃, and the impact that will always bear annealing furnace annealing pipe out, and this impact is very large, very frequently, in addition, the product of annealing furnace processing is also frequent variations, this will make the surging force acted on furnace bottom roll change, these combined factors get up just to cause the appearance gap between joint pin and pilot hole, make joint pin occur loosening, and then retreat, then crack appears in the weld seam between axis body and cylindrical shell, joint pin is finally cut off, cause the fracture of furnace bottom roll.Therefore, the applicant has adopted taper pin to coordinate straight hole, the mode that interference connects, well solved an above-mentioned difficult problem, significant prolongation the work-ing life of furnace bottom roll, reduce equipment running cost, guarantee equipment serviceability rate, can open rate, avoided high temperature to change the dangerous matter sources factor that furnace bottom roll is scalded.
A kind of manufacture method of described solution annealing stove furnace bottom roll, described left axis body, right axis body are welded on the cylindrical shell of having manufactured, described cylindrical shell manufacturing step comprises pipe check, peeling, segmentation, end face processing, checks reconditioning, cleaning, ring furnace heating, reaming and extruding, it is characterized in that: between described cleaning step and described reaming step, also has induction furnace heating steps for the first time, between described reaming and described compression step, also has induction furnace heating steps for the second time.
Cylindrical shell, after two induction furnace heating, has higher hot strength and antioxidant property, long service life.
As preferably, in the described heating steps of induction furnace for the first time, Heating temperature is to 1100-1130 ℃, insulation 1-2min, and then be heated to 1170-1210 ℃, insulation 2-3min.
As preferably, in the described heating steps of induction furnace for the second time, Heating temperature is to 1190-1230 ℃, insulation 3-5min.
The utility model beneficial effect is:
Structure is more reasonable, and structural strength is high, long service life, and phenomenon of rupture is few, has improved the working efficiency of annealing furnace, has reduced cost.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the structural representation after the long-pending right axis body of the utility model one embodiment middle cylinder body, left axis body connects;
Fig. 2 is Fig. 1 and left joint pin, right joint pin connection diagram.
The structural representation that Fig. 3 is the utility model embodiment 2.
Embodiment
The following stated is only preferred embodiment of the present utility model, not scope of the present utility model is limited.
Embodiment 1, see accompanying drawing 1,2, solution annealing stove furnace bottom roll, comprise cylindrical shell 1, be welded on described cylindrical shell 1 left end and right-hand member stretch into the left axis body 2 in described cylindrical shell 1 and be welded on described cylindrical shell 1 right-hand member and left end stretch in described cylindrical shell 1 right axis body 3, described left axis body 2 one ends stretch in described cylindrical shell 1 and are welded and fixed with described cylindrical shell 1, and described cylindrical shell 1 left end is provided with through described cylindrical shell 1 barrel and gos deep into the interior left pilot hole 4 of described left axis body 2, described right axis body 3 one ends stretch in described cylindrical shell 1 and are welded and fixed with described cylindrical shell 1, described cylindrical shell 1 right-hand member is provided with through described cylindrical shell 1 barrel and gos deep into the right pilot hole 5 in described right axis body 3, in described left pilot hole 4, right pilot hole 5, is provided with left joint pin 6, right joint pin 7, in the present embodiment, left axis body 2, right axis body 3 gos deep into left axis body 2, the left joint pin 6 that the degree of depth of right axis body 3 coordinates according to reality, right joint pin 7 is determined, the 1.8-1.9 that the interior axis body diameter of described cylindrical shell 1 is built-in length doubly adds 4mm, left axis body 2, the axis body diameter that right axis body 3 stretches in cylindrical shell 1 is 148mm, stretching into partial-length is 80mm, cylindrical shell 1 two ends are provided with the reaming with its cooperation, be convenient to welding, described left axis body 2 and right axis body 3 are solid axis body, and described cylindrical shell 1 is provided with venting hole 10, venting hole 10 aperture 9mm, apart from cylindrical shell, 1 end 305mm is good, can either under the condition of high temperature, discharge the gas in cylindrical shell 1, can prevent from scratching again annealing pipe,
Left pilot hole 4 parts are positioned on the barrel of cylindrical shell 1, another part is positioned at left axis body 2, same, right pilot hole 5 parts are positioned on the barrel of cylindrical shell 1, and another part is positioned at right axis body 3, and left pilot hole and right pilot hole are all straight holes, quantity is determined according to actual needs, wherein, the quantity of described left pilot hole 4 is three, 4 one-tenth 120 ° of angles of adjacent two left pilot holes; The quantity of described right pilot hole 5 is three, 5 one-tenth 120 ° of angles of adjacent two right pilot holes; Arrange like this, structural strength is high, in addition, described left pilot hole 4 and described right pilot hole 5 ports are provided with described left joint pin 6 and all or part of left layer be closed of described right joint pin 7 and/or backhand welding layer, after left joint pin and right joint pin enter in left pilot hole and right pilot hole fully, in left pilot hole, right pilot hole end, utilize welding rod to weld out left layer, backhand welding layer, thickness, at 1-2mm, can prevent that left joint pin, right joint pin are reversed.
In the present embodiment, described left joint pin 6, right joint pin 7 is made by the ZG4Cr28Ni48W5Si2 material, described cylindrical shell 1 is made by the ZGCr28Ni48W5Re material, described left axis body 2 and right axis body 3 are made by Cr25Ni20Si2, and, described left joint pin 6, right joint pin 7 is arranged on described left pilot hole 4 in the mode of shrink-fit, in right pilot hole 5, further, described left joint pin 6, right joint pin 7 is the taper pin of GB, tapering 1:50, and described left pilot hole 4, right pilot hole 5 is straight hole, and described left pilot hole 4, the diameter of right pilot hole 5 is than described left joint pin 6, the little 0.05-0.1mm of right joint pin 7 end diameter, after installing like this, left joint pin 6, right joint pin 7 can not exit, further, described left pilot hole 4 and described right pilot hole 5 ports are provided with the layer that described left joint pin 6 and described right joint pin 7 all are closed, layer thickness 1-2mm.
A kind of manufacture method of described solution annealing stove furnace bottom roll, described left axis body 2, right axis body 3 are welded on the cylindrical shell 1 of having manufactured, described cylindrical shell 1 manufacturing step comprises pipe check, peeling, segmentation, end face processing, checks reconditioning, cleaning, ring furnace heating, reaming and extruding, between described cleaning step and described reaming step, also has induction furnace heating steps for the first time, between described reaming and described compression step, also has induction furnace heating steps for the second time.
In the described heating steps of induction furnace for the first time, Heating temperature, to 1100-1130 ℃, is incubated 1-2min, and then is heated to 1170-1210 ℃, insulation 2-3min.
In the described heating steps of induction furnace for the second time, Heating temperature, to 1190-1230 ℃, is incubated 3-5min.
Embodiment 2, see accompanying drawing 3, in present embodiment, further taper pin is improved, described left joint pin 6, right joint pin 7 have interchangeability, and, be provided with retreat stop block at left joint pin 6, right joint pin 7 outer circumference surfaces, thrust block comprises the downside 8 that simultaneously extends internally downwards and the crossing outer circumference surface 11 of described downside 8 and is arranged on " v " font opening 9 on described outer circumference surface, 6 of " v " font opening 9 quantity, and such setting can improve the retaining effect.
A kind of manufacture method of described solution annealing stove furnace bottom roll, described left axis body 2, right axis body 3 are welded on the cylindrical shell 1 of having manufactured, described cylindrical shell 1 manufacturing step comprises pipe check, peeling, segmentation, end face processing, checks reconditioning, cleaning, ring furnace heating, reaming and extruding, between described cleaning step and described reaming step, also has induction furnace heating steps for the first time, between described reaming and described compression step, also has induction furnace heating steps for the second time.
In the described heating steps of induction furnace for the first time, Heating temperature, to 1120-1130 ℃, is incubated 2min, and then is heated to 1190-1200 ℃, insulation 3min.
In the described heating steps of induction furnace for the second time, Heating temperature, to 1210-1230 ℃, is incubated 5min.
Above explanation is only to explanation of the present utility model, make the complete enforcement this programme of those of ordinary skills' energy, but be not to restriction of the present utility model, those skilled in the art can make to the present embodiment the modification that there is no creative contribution as required after reading this specification sheets, and these are all not creative modifications.But as long as all be subject to the protection of patent law in claim scope of the present utility model.
Claims (7)
1. solution annealing stove furnace bottom roll, it is characterized in that: comprise cylindrical shell (1), be welded on described cylindrical shell (1) left end and left end stretch into the left axis body (2) in described cylindrical shell (1) and be welded on described cylindrical shell (1) right-hand member and right-hand member stretch in described cylindrical shell (1) right axis body (3), described left axis body (2) one ends stretch in described cylindrical shell (1) and are welded and fixed with described cylindrical shell (1), and described cylindrical shell (1) left end is provided with through described cylindrical shell (1) barrel and gos deep into left pilot hole (4) in described left axis body (2); Described right axis body (3) one ends stretch in described cylindrical shell (1) and are welded and fixed with described cylindrical shell (1), described cylindrical shell (1) right-hand member is provided with through described cylindrical shell (1) barrel and gos deep into the right pilot hole (5) in described right axis body (3), is provided with left joint pin (6), right joint pin (7) in described left pilot hole (4), right pilot hole (5).
2. solution annealing stove furnace bottom roll as claimed in claim 1, it is characterized in that: described left axis body (2), right axis body (3) stretch into the 1.8-1.9 that the interior axis body diameter of described cylindrical shell (1) is built-in length and doubly add 4mm.
3. solution annealing stove furnace bottom roll as claimed in claim 2, it is characterized in that: described left joint pin (6), right joint pin (7) are made by ZG4Cr28Ni48W5Si2, described cylindrical shell (1) is made by ZGCr28Ni48W5Re, and described left axis body (2) and right axis body (3) are made by Cr25Ni20Si2.
4. solution annealing stove furnace bottom roll as claimed in claim 1, it is characterized in that: described left pilot hole (4) and/or described right pilot hole (5) port are provided with described left joint pin (6) and/or all or part of left layer be closed of described right joint pin (7) and/or backhand welding layer.
5. solution annealing stove furnace bottom roll as claimed in claim 1, it is characterized in that: described left axis body (2) and right axis body (3) are solid axis body, and described cylindrical shell (1) is provided with venting hole (10).
6. solution annealing stove furnace bottom roll as claimed in claim 1, it is characterized in that: the quantity of described left pilot hole (4) is three, adjacent two left pilot holes (4) become 120 ° of angles; The quantity of described right pilot hole (5) is three, and adjacent two right pilot holes (5) become 120 ° of angles.
7. as claim 1 or 2 or 3 or 4 or 5 described solution annealing stove furnace bottom rolls, it is characterized in that: described left joint pin (6), right joint pin (7) are taper pin, described left pilot hole (4), right pilot hole (5) are straight hole, and the diameter of described left pilot hole (4), right pilot hole (5) is than described left joint pin (6), the little 0.05-0.1mm of right joint pin (7) nominal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320210718 CN203346442U (en) | 2013-04-24 | 2013-04-24 | Bottom roller of solid-melting annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320210718 CN203346442U (en) | 2013-04-24 | 2013-04-24 | Bottom roller of solid-melting annealing furnace |
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| Publication Number | Publication Date |
|---|---|
| CN203346442U true CN203346442U (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320210718 Expired - Fee Related CN203346442U (en) | 2013-04-24 | 2013-04-24 | Bottom roller of solid-melting annealing furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225011A (en) * | 2013-04-24 | 2013-07-31 | 浙江久立特材科技股份有限公司 | Solid melting annealing furnace hearth roll and manufacture method thereof |
-
2013
- 2013-04-24 CN CN 201320210718 patent/CN203346442U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225011A (en) * | 2013-04-24 | 2013-07-31 | 浙江久立特材科技股份有限公司 | Solid melting annealing furnace hearth roll and manufacture method thereof |
| CN103225011B (en) * | 2013-04-24 | 2015-04-29 | 浙江久立特材科技股份有限公司 | Solid melting annealing furnace hearth roll and manufacture method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20160424 |
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| CF01 | Termination of patent right due to non-payment of annual fee |