CN218580016U - Strengthening device for solution annealing treatment effect of austenitic stainless steel pipe - Google Patents

Abstract

The utility model relates to an reinforcing apparatus of austenitic stainless steel pipe solution annealing treatment effect relates to austenitic stainless steel thermal treatment technical field, and it includes the stay tube, the inboard of stay tube is formed with the heating chamber, just the both ends of stay tube are formed with input port and delivery outlet respectively, the input port all with the delivery outlet heats the chamber intercommunication, be provided with heating element on the stay tube, heating element is right the stay tube heats. This application can promote the duration that tubular product was solid-solved for tubular product can be by the heating that lasts in the stay tube, prevents that tubular product from just cooling down in the stay tube, makes tubular product have sufficient time for crystalline grain recrystallization and atomic diffusion, thereby promotes the effect of tubular product stress relief and metallographic structure crystallization, prevents that the yield strength of tubular product is too high and the percentage elongation is not enough.

Description

Strengthening device for solution annealing treatment effect of austenitic stainless steel pipe

Technical Field

The application relates to the technical field of austenitic stainless steel heat treatment, in particular to a device for enhancing the solution annealing treatment effect of an austenitic stainless steel pipe.

Background

At present, the solution treatment is to heat austenitic stainless steel to 1050 ℃ and keep the temperature for a period of time, then rapidly cool, on one hand, dissolve the free carbon among the crystal lattices again into the middle of the crystal grains, avoid the occurrence of intergranular corrosion (the carbon in austenitic stainless steel is precipitated into the free carbon from the crystal lattice at 450-850 ℃, the free carbon at 850-1100 ℃ is dissolved into the crystal lattice again, the metal exceeding 1100 ℃ is overheated, the crystal grains are coarse, the ductility is reduced), on the other hand, eliminate the internal stress generated by the plastic deformation of the pipe through high temperature.

In the related technology, the solution treatment is performed on a welding heat affected zone, the mechanical property of the pipe is adjusted, when the pipe is heated, a single induction coil is electrified, the pipe penetrates through the induction coil after the induction collar is electrified, and the pipe is heated through the induction coil.

In view of the above-mentioned related technologies, the inventor believes that there is a problem that the duration of solid solution is insufficient, and since the heating time of the pipe is the instant when the pipe passes through the induction coil, and then the pipe starts to cool down, there is not enough time for recrystallization and atomic diffusion of crystal grains, so that stress relief is not thorough and the metallographic structure is not crystallized uniformly, and the macroscopic performance of the pipe is that the yield strength is too high and the elongation is insufficient.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the solution treatment duration of the pipe is insufficient, the application provides a device for enhancing the solution annealing treatment effect of the austenitic stainless steel pipe.

The application provides a reinforcing apparatus of austenitic stainless steel pipe solution treatment effect adopts following technical scheme:

the utility model provides an enhancement device of austenitic stainless steel pipe solution annealing treatment effect, includes the stay tube, the inboard of stay tube is formed with the heating chamber, just the both ends of stay tube are formed with input port and delivery outlet respectively, input port and delivery outlet all with heating chamber intercommunication, be provided with heating element on the stay tube, heating element is right the stay tube heats.

Optionally, the heating assembly includes a heating wire, and the heating wire is wound on the support tube from the input port of the support tube to a side close to the output port.

Optionally, an insulating layer is arranged between the heating wire and the supporting tube, and the insulating layer is wrapped on the supporting tube.

Optionally, a protection tube is arranged on the support tube, and the support tube is sleeved in the protection tube.

Optionally, be provided with the spacing ring on the stay tube, the one end of spacing ring with the stay tube is fixed, and the other end passes the protection tube extends to the one side of keeping away from the stay tube, just be provided with temperature sensor on the spacing ring, temperature sensor inserts and establishes on the spacing ring, just be formed with the temperature measurement end on the temperature sensor, the temperature measurement end passes the stay tube is to being close to one side extension in heating chamber.

Optionally, an intermediate layer is arranged in the supporting pipe, the intermediate layer is sleeved in the supporting pipe, and a temperature measuring end of the temperature sensor is abutted to the intermediate layer.

Optionally, a connecting plate is arranged on the supporting tube, the connecting plate is fixed on the supporting tube, a connecting hole is formed in the connecting plate, and a plurality of connecting holes are formed in the connecting plate.

In summary, the present application includes the following at least one of the following beneficial technical effects of the device for enhancing the solution annealing treatment effect of the austenitic stainless steel pipe:

in the application, send into tubular product from the input port of stay tube, when tubular product removed to the heating intracavity, heating element heated tubular product, tubular product heating intracavity heating one end time later at the stay tube, tubular product is seen off from the delivery outlet of stay tube, help promoting the duration that tubular product dissolves, make tubular product can be by the heating that lasts in the stay tube, prevent that tubular product from just cooling down in the stay tube, make tubular product have sufficient time for crystalline grain recrystallization and atomic diffusion, thereby promote the effect of tubular product stress relief and metallographic structure crystallization, prevent that the yield strength of tubular product is too high and the percentage elongation is not enough.

Drawings

FIG. 1 is a schematic view of the overall structure of a strengthening device for mainly embodying the solution annealing treatment effect of an austenitic stainless steel pipe in the present embodiment;

fig. 2 is a sectional view of the support tube structure of the present embodiment.

Reference numerals: 1. supporting a tube; 11. a heating cavity; 12. an input port; 13. an output port; 14. an insulating layer; 15. an intermediate layer; 16. protecting the tube; 2. a heating assembly; 21. a heating wire; 3. a connecting plate; 31. connecting holes; 4. a temperature sensor; 41. and a temperature measuring end.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" or "an" and the like in the description and in the claims of the present application do not denote a limitation of quantity, but rather denote the presence of at least one.

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a device for enhancing the solution annealing treatment effect of an austenitic stainless steel pipe.

Referring to fig. 1-2, an apparatus for enhancing the solution annealing treatment effect of an austenitic stainless steel pipe comprises a support pipe 1, a heating cavity 11 is formed inside the support pipe 1, an input port 12 and an output port 13 are respectively formed at two ends of the support pipe 1, the input port 12 and the output port 13 are both communicated with the heating cavity 11, a heating assembly 2 is arranged on the support pipe 1, and the support pipe 1 is heated by the heating assembly 2. During the use, send into tubular product from input port 12 of stay tube 1, when tubular product removes to heating chamber 11 in, heating element 2 heats tubular product, tubular product heats after the one end time of heating in heating chamber 11 of stay tube 1, tubular product is seen off from the delivery outlet 13 of stay tube 1, help promoting the duration that tubular product dissolves, make tubular product can be by the heating that lasts in stay tube 1, prevent that tubular product from just cooling down in stay tube 1, make tubular product have sufficient time for crystalline grain recrystallization and atomic diffusion, thereby promote the effect of tubular product stress elimination and metallographic structure crystallization, prevent that the yield strength of tubular product is too high and the percentage of elongation is not enough.

The whole pipe form that is of stay tube 1, and the both ends of stay tube 1 all are provided with connecting plate 3, the both ends that connecting plate 3 is located stay tube 1 respectively are provided with two, and two connecting plates 3 all are fixed with stay tube 1, connecting hole 31 has all been seted up on two connecting plates 3, connecting hole 31 evenly spaced apart on connecting plate 3 is equipped with a plurality of, come to be connected with other links of thermal treatment section through connecting hole 31 on the connecting plate 3, make the convenience of thermal treatment connection promote.

In the prior art, when heating a pipe, electrify a single induction coil, the induction collar passes through the induction coil after being electrified, heat the pipe through the induction coil, designers find that the heating time of the pipe is the moment of passing through the induction coil, the pipe starts to be cooled after passing through, the time for grain recrystallization and atomic diffusion is insufficient, thereby the stress elimination is incomplete and the metallographic structure is not crystallized uniformly, the designers improve the back, the heating component 2 comprises a heating wire 21, the heating wire is wound on the supporting pipe 1 from the input port 12 of the supporting pipe 1 to the side close to the output port 13, the heating wire 21 is wound on the supporting pipe 1, the pipe is heated after entering the supporting pipe 1, the pipe moves in the supporting pipe 1, the heating wire 21 heats the pipe continuously, and the heating time of the pipe is prolonged.

In order to prevent the support tube 1 from being damaged in the heating process of the heating wire 21, the support tube 1 is usually made of metal, in order to prevent the heating wire 21 from contacting the support tube 1 to cause short circuit, an insulating layer 14 is arranged between the heating wire 21 and the support tube 1, the insulating layer 14 is wrapped on the support tube 1, and the heating wire 21 and the support tube 1 are separated by the insulating layer 14, so that the working stability of the heating wire 21 is improved.

In the production process, the surface of tubular product can influence the roughness of tubular product with 1 contact friction of stay tube, and the designer improves the back, is provided with intermediate level 15 in the stay tube 1, and intermediate level 15 is made by graphite, because graphite is high temperature resistant, the texture is soft, even tubular product and intermediate level 15 contact friction also can not harm tubular product, and the intermediate level 15 radiation absorption rate who is made by graphite is high, can conduct the heat of heater strip 21 fast.

Be provided with protection tube 16 on the stay tube 1, protection tube 16 cover is established on stay tube 1, establishes the outside at heater strip 21 through protection tube 16 cover, can prevent on the one hand that heater strip 21 from damaging, and on the other hand, protection tube 16 can reduce the thermal loss of heater strip 21.

Be provided with the spacing ring on the stay tube 1, the one end of spacing ring is fixed with stay tube 1, and the other end passes protection tube 16 extends to one side of keeping away from stay tube 1, and is provided with temperature sensor 4 on the spacing ring, and temperature sensor 4 inserts and establishes on the spacing ring, and is formed with temperature measurement end 41 on the temperature sensor 4, and temperature measurement end 41 passes stay tube 1 and extends to the intermediate level 15 that is close to one side of heating chamber 11, and temperature measurement end 41 contradicts with intermediate level 15. In the using process, the heating wire 21 is used for heating, the temperature sensor 4 measures the temperature of the intermediate layer 15 through the temperature measuring end 41 in the heating process of the heating wire 21, however, in the heating process of the heating wire 21, a heat balance process is needed, a worker finds that generally 1-2 minutes of time delay exists, the optimal time is 2 minutes, through the heat balance of 2 minutes, the temperature measured by the temperature sensor 4 is the temperature of the pipe to be heated, and the temperature of the pipe is always kept at 1050 ℃ by observing the temperature display on the temperature sensor 4.

When the pipe passes through the supporting pipe 1, the pipe is heated by the heating wire 21 and is kept warm, so that the solid solution temperature and the solid solution time are ensured, and after the pipe is moved out from the output port 13 of the supporting pipe 1, a worker can send the pipe into the cooling pipe, cool the pipe in the cooling pipe, and further ensure the solid solution quality.

The implementation principle of the device for enhancing the solution annealing treatment effect of the austenitic stainless steel pipe in the embodiment of the application is as follows: when the heating device is used, the supporting tube 1 is heated by the heating wire 21, after the middle layer 15 and the heating wire 21 are in thermal balance, the temperature sensor 4 measures the temperature of the middle layer 15 through the temperature measuring end 41, the temperature of the middle layer 15 is kept at 1050 ℃ by the heating wire 21, then the pipe is fed from the input port 12 at one end of the supporting tube 1, and the pipe is heated by the heating cavity 11 and then is fed from the output port 13 of the supporting tube 1.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (7)

1. An enhancement device of austenitic stainless steel pipe solution annealing treatment effect, includes stay tube (1), its characterized in that: the inboard of stay tube (1) is formed with heating chamber (11), just the both ends of stay tube (1) are formed with input port (12) and delivery outlet (13) respectively, input port (12) and delivery outlet (13) all with heating chamber (11) intercommunication, be provided with heating element (2) on stay tube (1), heating element (2) are right stay tube (1) heats.

2. The apparatus for enhancing the effect of solution treatment of austenitic stainless steel pipe according to claim 1, wherein: the heating assembly (2) comprises a heating wire (21), and the heating wire (21) is wound on the supporting pipe (1) from the input port (12) of the supporting pipe (1) to one side close to the output port (13).

3. The apparatus for enhancing the effect of solution treatment of austenitic stainless steel pipe according to claim 2, wherein: an insulating layer (14) is arranged between the heating wire (21) and the supporting pipe (1), and the insulating layer (14) is wrapped on the supporting pipe (1).

4. The device for enhancing the solution treatment effect of the austenitic stainless steel tube according to claim 1, wherein: a protection tube (16) is arranged on the support tube (1), and the support tube (1) is sleeved in the protection tube (16).

5. The device for enhancing the solution annealing treatment effect of austenitic stainless steel pipe according to claim 4, wherein: be provided with the spacing ring on stay tube (1), the one end of spacing ring with stay tube (1) is fixed, and the other end passes protection tube (16) extends to one side of keeping away from stay tube (1), just be provided with temperature sensor (4) on the spacing ring, temperature sensor (4) are inserted and are established on the spacing ring, just be formed with temperature measurement end (41) on temperature sensor (4), temperature measurement end (41) are passed stay tube (1) is to being close to one side extension in heating chamber (11).

6. The apparatus for enhancing the effect of solution treatment of austenitic stainless steel pipe according to claim 5, wherein: an intermediate layer (15) is arranged in the supporting tube (1), the intermediate layer (15) is sleeved in the supporting tube (1), and a temperature measuring end (41) of the temperature sensor (4) is abutted to the intermediate layer (15).

7. The apparatus for enhancing the effect of solution treatment of austenitic stainless steel pipe according to claim 1, wherein: the supporting tube (1) is provided with a connecting plate (3), the connecting plate (3) is fixed on the supporting tube (1), the connecting plate (3) is provided with a connecting hole (31), and the connecting hole (31) is provided with a plurality of connecting plates (3).

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