CN112301201A - Continuous annealing furnace and method for continuous solution treatment of medium plate by using same - Google Patents
Continuous annealing furnace and method for continuous solution treatment of medium plate by using same Download PDFInfo
- Publication number
- CN112301201A CN112301201A CN202011031580.2A CN202011031580A CN112301201A CN 112301201 A CN112301201 A CN 112301201A CN 202011031580 A CN202011031580 A CN 202011031580A CN 112301201 A CN112301201 A CN 112301201A
- Authority
- CN
- China
- Prior art keywords
- furnace
- roller
- furnace body
- steel plate
- heating
- 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
Classifications
-
- 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
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- 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
- C21D9/0012—Rolls; Roll arrangements
-
- 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
- C21D9/0056—Furnaces through which the charge is moved in a horizontal straight path
Landscapes
- 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 Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention relates to the field of stainless steel heat treatment, and discloses a continuous annealing furnace and a method for continuous solution treatment of medium plates, which solve the problems of uneven surface quality, performance and metallographic structure of steel plates in the prior art, wherein the continuous annealing furnace comprises a furnace body and a roller way arranged in the furnace body, a furnace body outlet and a furnace body inlet are respectively arranged at two ends of the furnace body, the roller way comprises a plurality of furnace rollers, the furnace rollers are sequentially and horizontally arranged from the furnace body inlet to the furnace body outlet, the roller way is sequentially divided into a preheating section, a heating section and a soaking section from the furnace body inlet to the furnace body outlet, and the method for continuous solution treatment of the medium plates of the annealing furnace sequentially comprises the following: the invention adopts the technical scheme, so that the integral temperature of the steel plate is uniform, the core and surface tissues of the steel plate are uniform, the performance is good, the steel plate is not easy to be bonded with a furnace roller, the quality of the steel plate is improved, and the production efficiency is improved.
Description
Technical Field
The invention relates to the field of stainless steel heat treatment, in particular to a continuous annealing furnace and a method for continuous solution treatment of medium plates by using the same.
Background
The stainless steel medium plate is widely applied to the industries of nuclear power, military industry, chemical industry, food, pressure container manufacturing and the like. The stainless steel plate needs solution treatment and acid pickling before use, and at present, the solution treatment of the stainless steel plate has two types of equipment: chamber furnaces and continuous annealing furnaces.
The chamber furnace treatment mode is to stack the steel plates to be treated and then push the steel plates into a box body for heat treatment. The defect is that the surface of the stainless steel medium plate can be directly heated to the high temperature of 1100 ℃ from the room temperature under the condition of not preheating when the stainless steel medium plate enters the chamber furnace, and because the stainless steel has poor heat conductivity, the difference between the surface temperature of the steel plate and the core is large, and the steel types such as S30403, S31603 and the like sensitive to the temperature have great risk of generating cracks. Meanwhile, the temperature of the contact part and the non-contact part of the steel plate and the furnace body is not uniform, the temperature of the contact part of the steel plate and the steel plate is not uniform, the temperature of the upper surface and the lower surface of the steel plate is not uniform, so that the structure is not uniform and the performance is fluctuated, the steel plate has non-uniform color difference after pickling, and the production efficiency is low.
The continuous annealing furnace treatment method is to heat-treat the steel sheet in a continuous annealing furnace. In a general continuous annealing furnace, an outlet and an inlet are arranged, the outlet is connected by a longer roller way, the roller way rotates in the same direction at a certain speed, so that a steel plate to be heated placed on the roller way moves forward at a slower speed at a uniform speed, a stainless steel medium plate is caused to move slowly in the annealing furnace, the stainless steel medium plate is equivalently positioned at the same position within a period of time, the temperature of the part in contact with a furnace roller is lower than that of other parts, and the nonuniformity of performance and organization exists; meanwhile, the lower surface of the steel plate is very easy to adhere to a furnace roller to form an indentation defect, and the surface of the pickled steel plate has chromatic aberration, so that the product quality is seriously influenced.
Disclosure of Invention
The invention aims to provide a continuous annealing furnace and a method for continuous solution treatment of medium plates thereof, aiming at solving the problems that in the traditional annealing furnace, the steel plate slowly advances, the temperature of the part which is in contact with a furnace roller for a long time is lower than that of other parts, and the nonuniformity of performance and structure exists; meanwhile, the lower surface of the steel plate is very easy to be bonded on a furnace roller to form an indentation defect, and the surface of the pickled steel plate has color difference to seriously affect the product quality.
The technical scheme adopted by the invention is as follows:
the utility model provides a continuous annealing furnace, includes the furnace body and sets up the roll table in the furnace body is inside, and the furnace body both ends are furnace body export and furnace body entry respectively, and the roll table includes a plurality of stove rollers, and the stove roller is followed the furnace body entry and is exported horizontal arrangement in proper order to the furnace body, and the roll table is followed the furnace body entry and is divided into preheating section, heating section and soaking section to the furnace body export in proper order.
Preferably, the number of the furnace rollers in the preheating section is 10-15% of the total number of the furnace rollers, the number of the furnace rollers in the heating section is 30-45% of the total number of the furnace rollers, and the number of the furnace rollers in the soaking section is 45-55% of the total number of the furnace rollers.
Preferably, the furnace roller surface of the preheating section is made of a high-chromium-content pitted steel heat-resistant material, and the furnace roller surfaces of the heating section and the soaking section are made of low-strength and poor-wear-resistant refractory materials.
Preferably, the furnace rollers are all water-cooled rollers.
Preferably, the furnace body inlet is provided with a brush roller parallel to the roller way on the outer side of the furnace body, the brush roller comprises a first brush roller and a second brush roller, the first brush roller is arranged above the second brush roller, the lower roll surface of the first brush roller is higher than the upper roll surface of the roller way, and the upper roll surface of the second brush roller and the upper roll surface of the roller way are in the same horizontal plane.
A method for continuous solution treatment of a medium plate comprises the following steps:
s1: preparing a heating work;
s2: heating in a periodic reciprocating type forward heating mode; the stainless steel plate adopts forward-backward periodic reciprocating motion in a roller way of the annealing furnace,
s3: and (5) inspecting the product quality.
Preferably, in step S1, the specific steps are as follows:
a 1: controlling tissue aberration;
a 2: determining the heating time;
a 3: determining forward and backward distances;
a 4: and determining the rotating speed of the furnace roller.
Preferably, in step S2, the specific steps are as follows:
b 1: the stainless steel plate advances at a constant speed on the preheating section;
b 2: the stainless steel plate adopts forward-backward periodic reciprocating motion on the heating section and the soaking section, and the forward distance is greater than the backward distance.
Preferably, in step S3, the product quality is checked according to the production requirement, and the defective product is processed.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the roller ways in the furnace are distributed in a three-section manner, and the preheating section is arranged to ensure that the steel plate has a uniform temperature rise process before being heated, so that the steel plate does not have the risk of generating cracks; by adopting the method provided by the invention, the running states on different sections are different, the forward-backward periodic reciprocating motion is adopted on the heating section and the soaking section, and under the condition of controlling the same furnace time, compared with the traditional method, the displacement of the steel plate is the same, the passing distance is greatly increased, the rotating speed of the furnace roller can be correspondingly adjusted, the moving speed of the steel plate is increased, and the problems of performance and tissue nonuniformity caused by that the temperature of the part of the steel plate contacted with the furnace roller for a long time is lower than that of other parts due to slow running are avoided.
2. The forward-backward periodic reciprocating motion accelerates the running speed of the steel plate, so that the lower surface of the steel plate is not easy to adhere to a furnace roller, and the problems of press-in defect, color difference on the surface of the steel plate after acid cleaning and serious influence on the product quality are solved.
3. The invention improves the product quality, reduces the workload of processing defective products and improves the production efficiency.
4. The invention correspondingly adjusts the material of each segmented furnace roller, so that the material can be better matched with the strength change of the steel plate in the advancing process, and the product quality is improved.
Drawings
FIG. 1 is a schematic view of a continuous annealing furnace according to the present invention;
FIG. 2 is a schematic view of the forward-reverse periodic reciprocating motion of the present invention;
FIG. 3 is a schematic diagram of the steps of the method provided by the present invention.
Wherein: 1-furnace body, 2-first brush roller, 3-second brush roller, 4-furnace body inlet, 5-furnace roller and 6-furnace body outlet.
Detailed Description
All features disclosed in this specification may be combined in any combination, except features and/or steps that are mutually exclusive.
The present invention will be described in detail with reference to the accompanying drawings 1 to 3.
Example 1
The utility model provides a continuous annealing furnace, includes furnace body 1 and sets up the roll table in furnace body 1 inside, and 1 both ends of furnace body are furnace body export 6 and furnace body entry 4 respectively, and the roll table includes a plurality of stove rollers 5, and stove rollers 5 are followed furnace body entry 4 and are exported 6 horizontal arrangement in proper order to the furnace body, and the roll table is followed furnace body entry 4 and is divided into preheating section, heating section and soaking section in proper order to furnace body export 6.
It should be noted that, the annealing furnace equipment has a computer control program, and the rotation speed of the furnace rollers of different sections can be controlled through setting of the computer control program, so that the forward-backward periodic reciprocating motion of the steel plate on the roller way is realized.
As shown in fig. 1, in the above embodiment, the roller way is provided in a three-segment sectional manner, and the method provided by the present invention is used to make the steel plate move in a forward-backward periodic reciprocating manner in the heating segment and the preheating segment, so that the steel plate has the same displacement and greatly increases the passing distance compared with the conventional method under the condition of the same furnace time control, so that the rotating speed of the furnace roller can be correspondingly adjusted, the moving speed of the steel plate is increased, and the problem of uneven performance and organization caused by the fact that the temperature of the part of the steel plate contacting with the furnace roller for a long time is lower than that of other parts due to slow moving of the steel plate is solved; meanwhile, due to the increase of the movement speed of the steel plate, the lower surface of the steel plate is not easy to adhere to a furnace roller, so that the pressing-in defect is formed, the surface of the steel plate is free from color difference after acid cleaning, and the product quality is greatly improved.
Example 2
Further optimization was performed on the basis of example 1:
the number of the furnace rollers 5 of the preheating section is preferably 10-15 percent of the total number of the furnace rollers, the number of the furnace rollers 5 of the heating section is 30-45 percent of the total number of the furnace rollers, the number of the furnace rollers 5 of the soaking section is 45-55 percent of the total number of the furnace rollers, and the intermediate values of the ranges are usually selected and set according to the optimal ranges obtained by professional knowledge and experience during actual operation. The heating and soaking time is enough under the condition of ensuring the sufficient preheating time, and the product quality is not influenced.
Preferably, the surface of the furnace roller 5 in the preheating section is made of a high-chromium-content pitted steel heat-resistant material, the surface of the furnace roller 5 in the heating section and the surface of the furnace roller 5 in the soaking section are made of a low-strength and poor-wear-resistant refractory material, and the surface of the preheating section is made of a high-chromium-content pitted steel heat-resistant material and can remove iron scales on the lower surface of a steel plate; on heating section and soaking section, steel sheet surface temperature progressively rises, intensity reduces, for preventing that the iron scale of steel sheet lower surface from impressing the steel sheet, chooses for use intensity relatively lower, the relatively poor refractory material of wear-resisting as the roll surface.
Preferably, the furnace roller 5 is a water-cooling roller, the furnace roller 5 in a high-temperature state needs to be cooled, a condensed water channel is arranged in the water-cooling roller, and convenient installation and disassembly can be realized.
As shown in fig. 1, it is preferable that the furnace body inlet 4 is provided with a brush roll outside the furnace body 1 in parallel with the roller way, the brush roll comprises a first brush roll 2 and a second brush roll 3, the first brush roll 2 is arranged above the second brush roll 3, the lower roll surface of the first brush roll 2 is higher than the upper roll surface of the roller way, the upper roll surface of the second brush roll 3 is in the same horizontal plane with the upper roll surface of the roller way, the brush roll in the prior art is selected by the brush roll, the brush wire is made of stainless steel wires or other hard wear-resistant materials, and the brush roll is arranged to remove iron oxide scales on the upper and lower surfaces of the.
Example 3
As shown in FIG. 3, a method for continuous solution treatment of a medium plate, which adopts the continuous annealing furnace provided by the invention, comprises the following steps:
s1: preparing a heating work;
s2: heating in a periodic reciprocating type forward heating mode; the stainless steel plate adopts forward-backward periodic reciprocating motion in a roller way of the annealing furnace,
s3: and (5) inspecting the product quality.
The method comprises the following steps:
in step S1, the specific steps are as follows:
a 1: controlling tissue aberration; ensuring the stable performance of the steel plate and determining the phase difference grade of the surface and the core structure of the steel plate.
a 2: determining the heating time; ensuring the performance of the steel plate and the performance after treatment, and determining the solution treatment time.
a 3: determining forward and backward distances; and determining the relation between the advancing distance and the retreating distance according to the steel type and the thickness, wherein the retreating distance is 1/3-2/3 of the advancing distance according to experience.
a 4: determining the rotating speed of the furnace roller; compared with the traditional method, the heating time is unchanged, so that the moving distance of the steel plate is increased in the same unit time, the moving speed is correspondingly increased, and the moving speed of the steel plate is directly related to the rotating speed of the furnace roller.
In step S2, the specific steps are as follows:
the steel sheet heating operation is performed in accordance with the parameters determined in step S1,
b 1: proceeding at a constant speed on a preheating section; the temperature of the steel plate is uniformly increased on the preheating section, so that the risk that the steel plate is cracked when the temperature is directly increased from room temperature to 1100 ℃ is avoided.
b 2: the heating section and the soaking section adopt forward-backward periodic reciprocating motion, and the forward distance is larger than the backward distance; by adopting the mode to move, the steel plate is always in a moving state on the heating section and the soaking section, the speed is compared with that of the traditional method, the steel plate is greatly promoted, the condition that the same position of the lower surface of the steel plate is in contact with a furnace roller for a long time is avoided, the high-temperature bonding risk and the pressing-in defect are eliminated, the temperature of the whole steel plate is uniform, the color and luster are uniform after pickling, and the production efficiency is high.
In step S3, the product quality is checked according to the production requirements, and there are very few products with defects, and once found, the corresponding processing is performed in time to reduce the loss.
The steel plate adopts forward-backward periodic reciprocating motion as shown in figure 2 on the heating section and the preheating section, the steel plate firstly moves from the position A in the block diagram 1 to the position B in the block diagram 2, then the furnace roller reverses, the moving direction of the steel plate is changed, the steel plate moves to the position C in the block diagram 3, the displacement from the position A to the position B is larger than that from the position B to the position C, the steel plate moves from the position A to the position B and then backs to the position C, and therefore, the forward-backward motion of one period is completed, the displacement of one period is from the position A to the position C, and the periodic reciprocating motion provided by the invention is realized by repeating the rule all the time.
According to the embodiment, under the condition that the furnace time is controlled to be the same, compared with the traditional method, the distance to be traveled is greatly increased under the condition that the displacement of the steel plate is not changed, so that the rotating speed of the furnace roller can be correspondingly adjusted, the moving speed of the steel plate is increased, the integral temperature of the steel plate is uniform, the core and surface tissues of the steel plate are uniform, and the tissues and the performances in the length direction of the steel plate are uniform; the defect of press-in of the roller in the furnace generated by a high-temperature chamber of the steel plate is overcome, and the lower surface of the steel plate has good quality; the defects of uneven oxide scales on the surface of the steel plate and the color difference of the acid-washing surface caused by polishing of press-in defects are eliminated; the grinding workload of pressing defects is reduced, and the production efficiency is high.
Example 4
By adopting the continuous reaction furnace and the method for continuous solution treatment of the medium plate, which are provided by the invention, the solution treatment of the S30408 steel plate with the thickness of 70mm is taken as an example for further explanation:
controlling the difference between the surface and the core structure of the steel plate not to exceed two levels, determining that the solution time in the furnace is not shorter than 175min, the length of the continuous annealing furnace is generally between 50m and 100m, converting the average running speed of the steel plate in the furnace to be 0.286m/min to 0.571m/min, determining that the retreat distance is 2/3 of the advancing distance, and explaining the periodic reciprocating motion, as shown in figure 2, assuming that the length of the steel plate along the roller way conveying direction is L, assuming that the steel plate advances L in unit time, then retreating 2/3L, namely the displacement generated in one advancing-retreating period is 1/3L, the motion path is (1+2/3) L, assuming that the steel plate moves L in the traditional method, the steel plate moves along the path, the time is T, the speed is V, and adopting the method of the invention under the condition that the T is not changed, if the displacement is L, the moving distance of the steel plate is (1+2/3+1+2/3+1+2/3) L, the moving distance is obviously increased and becomes five times of the original moving distance, and if the time T is not changed, the corresponding moving speed V becomes five times of the original moving speed V, namely the rotating speed of the furnace roller is greatly improved, so that the problems of bonding between the steel plate and the furnace roller and non-uniform metallographic structure are effectively solved.
The working principle is as follows: placing a steel plate into a roller way for conveying, primarily removing surface iron oxide scales from the steel plate through a brush roller, then entering a furnace body, completing conveying through rotation of a furnace roller, rotating the furnace roller at a constant speed on a preheating section, slowly heating the steel plate, and further removing the iron oxide scales on the lower surface of the steel plate by the furnace roller; then the steel plate reaches the heating section, the temperature is further increased, the steel plate moves forwards for a certain distance, then the furnace roller rotates reversely, the steel plate retracts, the retraction distance is 2/3 of the advancing distance, one advancing and one retracting are a period, and the advancing is realized according to the periodic reciprocating movement.
The above description is a specific embodiment of the present invention. The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the protection scope of the present invention, which is similar or similar to the technical solutions of the present invention.
Claims (9)
1. The utility model provides a continuous annealing furnace, includes furnace body (1) and sets up the roll table in furnace body (1) inside, furnace body (1) both ends are furnace body export (6) and furnace body entry (4) respectively, the roll table includes a plurality of stove rollers (5), stove rollers (5) are from furnace body entry (4) to furnace body export (6) horizontal arrangement in proper order, its characterized in that, the roll table is divided into preheating section, heating section and soaking section from furnace body entry (4) to furnace body export (6) in proper order.
2. A continuous annealing furnace according to claim 1, characterized in that the number of rolls (5) of the preheating zone is 10-15% of the total number of rolls, the number of rolls (5) of the heating zone is 30-45% of the total number of rolls, and the number of rolls (5) of the soaking zone is 45-55% of the total number of rolls.
3. The continuous annealing furnace according to claim 1, wherein the surface of the furnace roller (5) of the preheating zone is made of a refractory material with high chromium content and pitted steel, and the surface of the furnace roller (5) of the heating zone and the surface of the furnace roller of the soaking zone are made of a refractory material with low strength and poor wear resistance.
4. A continuous annealing furnace according to claim 1, characterized in that said furnace rolls (5) are water-cooled rolls.
5. The continuous annealing furnace according to claim 1, characterized in that the furnace body inlet (4) and the outside of the furnace body (1) are provided with a brush roller parallel to the roller table, the brush roller comprises a first brush roller (2) and a second brush roller (3), the first brush roller (2) is arranged above the second brush roller (3), the lower roller surface of the first brush roller (2) is higher than the upper roller surface of the roller table, and the upper roller surface of the second brush roller (3) and the upper roller surface of the roller table are in the same horizontal plane.
6. A method for continuous solution treatment of a medium plate, characterized in that a continuous annealing furnace according to any one of claims 1 to 5 is used, comprising the steps of:
s1: preparing a heating work;
s2: heating in a periodic reciprocating type forward heating mode; the stainless steel plate adopts forward-backward periodic reciprocating motion in a roller way of the annealing furnace,
s3: and (5) inspecting the product quality.
7. The method for continuous solution treatment of medium plate according to claim 6, wherein the step S1 comprises the following steps:
a 1: controlling tissue aberration;
a 2: determining the heating time;
a 3: determining forward and backward distances;
a 4: and determining the rotating speed of the furnace roller.
8. The method for continuous solution treatment of medium plate according to claim 6, wherein the step S2 comprises the following steps:
b 1: the stainless steel plate advances at a constant speed on the preheating section;
b 2: the stainless steel plate adopts forward-backward periodic reciprocating motion on the heating section and the soaking section, and the forward distance is greater than the backward distance.
9. The method for continuous solution treatment of medium plate according to claim 6, wherein in said step S3, the product with flaw is treated according to the production requirement for product quality inspection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011031580.2A CN112301201A (en) | 2020-09-27 | 2020-09-27 | Continuous annealing furnace and method for continuous solution treatment of medium plate by using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011031580.2A CN112301201A (en) | 2020-09-27 | 2020-09-27 | Continuous annealing furnace and method for continuous solution treatment of medium plate by using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112301201A true CN112301201A (en) | 2021-02-02 |
Family
ID=74488488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011031580.2A Pending CN112301201A (en) | 2020-09-27 | 2020-09-27 | Continuous annealing furnace and method for continuous solution treatment of medium plate by using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112301201A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114953524A (en) * | 2022-05-25 | 2022-08-30 | 临海伟星新型建材有限公司 | Continuous annealing process for plastic pipe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981338A (en) * | 2014-05-06 | 2014-08-13 | 湖州华恒不锈钢有限公司 | Long-range roller-hearth solid solution annealing furnace and method for improving silicon content of austenitic stainless steel product by using same |
| CN104561515A (en) * | 2015-01-26 | 2015-04-29 | 河北星烁锯业股份有限公司 | Continuous plate blank heating furnace and heating method thereof |
| CN105149366A (en) * | 2015-10-26 | 2015-12-16 | 上海耀秦冶金设备技术有限公司 | Phosphorus removal device for continuous casting slabs |
| CN106191393A (en) * | 2015-05-08 | 2016-12-07 | 双立恒通新材料科技（淮安）有限公司 | A kind of novel three-stage non-oxidation continuous annealer |
| CN207685324U (en) * | 2018-01-11 | 2018-08-03 | 浙江鼎欣钢管制造有限公司 | A kind of energy-saving roller-hearth steel pipe annealing furnace |
| CN110234775A (en) * | 2017-02-02 | 2019-09-13 | 杰富意钢铁株式会社 | Continuous annealing furnace |
-
2020
- 2020-09-27 CN CN202011031580.2A patent/CN112301201A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981338A (en) * | 2014-05-06 | 2014-08-13 | 湖州华恒不锈钢有限公司 | Long-range roller-hearth solid solution annealing furnace and method for improving silicon content of austenitic stainless steel product by using same |
| CN104561515A (en) * | 2015-01-26 | 2015-04-29 | 河北星烁锯业股份有限公司 | Continuous plate blank heating furnace and heating method thereof |
| CN106191393A (en) * | 2015-05-08 | 2016-12-07 | 双立恒通新材料科技（淮安）有限公司 | A kind of novel three-stage non-oxidation continuous annealer |
| CN105149366A (en) * | 2015-10-26 | 2015-12-16 | 上海耀秦冶金设备技术有限公司 | Phosphorus removal device for continuous casting slabs |
| CN110234775A (en) * | 2017-02-02 | 2019-09-13 | 杰富意钢铁株式会社 | Continuous annealing furnace |
| CN207685324U (en) * | 2018-01-11 | 2018-08-03 | 浙江鼎欣钢管制造有限公司 | A kind of energy-saving roller-hearth steel pipe annealing furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114953524A (en) * | 2022-05-25 | 2022-08-30 | 临海伟星新型建材有限公司 | Continuous annealing process for plastic pipe |
| CN114953524B (en) * | 2022-05-25 | 2024-06-11 | 临海伟星新型建材有限公司 | Continuous annealing process for plastic pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104484560B (en) | A kind of strip running deviation forecasting procedure for being suitable for continuous annealing unit | |
| CN101559446B (en) | Method for preparing welded stainless steel pipe of boiler | |
| CN102766751B (en) | Process method for quenching rotary support gear | |
| CN107138660A (en) | A kind of high-carbon-chromium bearing steel warm-rolling loop forming method for realizing tissue nodularization | |
| CN105543459B (en) | A kind of compound process for quenching of Cr12MoV rolls | |
| CN111549205A (en) | Novel heat treatment process for cold rolling transmission roller | |
| CN105798424A (en) | Roll surfacing repair device and repair method | |
| CN108977637B (en) | Surface induction quenching method for straight bevel gear and application thereof | |
| CN112301201A (en) | Continuous annealing furnace and method for continuous solution treatment of medium plate by using same | |
| CN106868267A (en) | A kind of D2Steel roll double frequency heat treatment quenching process and device | |
| CN110184447B (en) | Intelligent fine cooling control method for normalized pickling line | |
| CN101660025B (en) | Medium frequency induction hardening process of super large diameter bearing steel castings | |
| CN110983027A (en) | Shape control method for thin quenched steel plate | |
| CN104416293A (en) | Composite overlaying manufacturing method of casting roller | |
| CN109226934B (en) | Build-up welding method for roller | |
| CN100537790C (en) | The heat treating method of marine diesel oil machine bolt | |
| CN205733362U (en) | A kind of roll overlaying prosthetic device | |
| CN111850254B (en) | Method for preventing spline shaft from medium-frequency quenching deformation | |
| CN111705207B (en) | Heat treatment device and heat treatment leveling method for stainless steel belt for conveyor belt | |
| CN103437062A (en) | Synchronous cleaning device | |
| CN111575452A (en) | Method for reducing hot-rolled pickling surface roughness of 10Cr17 stainless steel | |
| CN109468451B (en) | Heat treatment method of 55NiCrMoV7 roller way roller | |
| CN1600875A (en) | Technique for oil quenching casting sphere made from high chrome alloy | |
| CN103286149B (en) | Manufacturing process of ultra-pure alloy cold wire-drawing material | |
| CN115232951B (en) | Method for reserving soft belt in induction quenching process of H11 steel straightening roller |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210202 |