CN113699345B

CN113699345B - Heat treatment system and process for improving corrosion resistance, toughness and polishing property of die steel

Info

Publication number: CN113699345B
Application number: CN202110962205.8A
Authority: CN
Inventors: 蔡进强
Original assignee: Jiangsu Huadong Sanhexing Mould Material Co ltd
Current assignee: Jiangsu Huadong Sanhexing Mould Material Co ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2023-04-14
Anticipated expiration: 2041-08-20
Also published as: CN113699345A

Abstract

The invention discloses a heat treatment system and a process for improving corrosion resistance, toughness and polishing property of die steel, belonging to the technical field of heat treatment of die steel.

Description

Heat treatment system and process for improving corrosion resistance, toughness and polishing property of die steel

Technical Field

The invention relates to the technical field of heat treatment of die steel, in particular to a heat treatment system and a heat treatment process for die steel, which improve corrosion resistance, toughness and polishing property.

Background

The die steel is used for manufacturing dies such as cold stamping dies, hot forging dies, die casting dies and the like. The die is a main processing tool for manufacturing parts in industrial departments of mechanical manufacturing, radio instruments, motors, electric appliances and the like. The quality of the die directly affects the quality of the pressure processing technology, the precision yield of products and the production cost, and the quality and the service life of the die are mainly affected by die materials and heat treatment except by reasonable structural design and processing precision.

The heat treatment of die steel is generally carried out in a heat treatment furnace (i.e. heating furnace), and the existing heating furnace generally has one defect: the inside peripheral temperature of furnace body is higher than central temperature, and when carrying out the mould steel thermal treatment, must guarantee that the whole temperature of being heated of mould steel is even, but current heating furnace is because its structural constraint, and the inside temperature of furnace body can reach balanced state after needing long-time heating to because center department temperature is handed over all the time, be difficult to guarantee the even heating to the mould steel, thereby influenced the heat treatment of mould steel, to the corrosion resistance of heat treatment back mould steel, toughness etc. cause great influence.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a heat treatment system and a process for improving corrosion resistance, toughness and polishing property of die steel, wherein a plurality of groups of moving constant-temperature heat conduction balls are arranged in the heat treatment furnace, and by making irregular movement in the heat treatment furnace during heat treatment and generating a plurality of disturbance air flows with higher strength in the movement process, the temperature balance and uniformity in the heat treatment furnace are accelerated, the heat treatment quality of the die steel is effectively improved, the phenomenon that the die steel is heated unevenly due to uneven temperature in the heat treatment furnace is avoided, the effect of the heat treatment process is effectively improved, and the comprehensive performances of corrosion resistance, toughness and the like after the heat treatment of the die steel are effectively improved.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A heat treatment system for improving corrosion resistance, toughness and polishing performance of die steel comprises a heat treatment furnace, wherein a plurality of groups of smooth supporting rods are arranged on the upper side and the lower side in the heat treatment furnace, a moving constant-temperature heat conduction ball is placed on each group of smooth supporting rods, a first annular alternating current electromagnet arranged corresponding to the moving constant-temperature heat conduction ball is fixed on the inner wall of the heat treatment furnace, electric telescopic rods are arranged on the inner walls of the upper side and the lower side of the heat treatment furnace, and the end parts of the electric telescopic rods are connected with heat conduction covers;

the movable constant-temperature heat conduction ball comprises a first hollow heat conduction ball body, a first fixed support ball is arranged at the center of the interior of the first hollow heat conduction ball body, a plurality of heat expansion connecting rods distributed in a spherical shape are fixed on the outer wall of the first fixed support ball body, the end portion of each heat expansion connecting rod is connected with a first arc-shaped permanent magnet, a heat conduction wrapping layer is fixed between every two adjacent heat expansion connecting rods in the interior of the first hollow heat conduction ball body, a heated melting separation layer is arranged in the interior of the heat conduction wrapping layer and divides the heat conduction wrapping layer into two filling cavities, and effervescent disintegrating agents and water filling layers are filled in the two filling cavities respectively, and a normally closed gas outlet is formed in the first hollow heat conduction ball body.

When the heat treatment system works, the die steel is placed on the heat conduction cover on the lower side, the electric telescopic rods are opened simultaneously to fix the die steel by utilizing the two heat conduction covers, the heating module on the heat treatment furnace is opened simultaneously to carry out heat treatment on the die steel, the first annular alternating current electromagnet is opened in the heat treatment process to generate a magnetic field with continuously changing direction, the first arc permanent magnets in the moving constant-temperature heat conduction balls are arranged in the same direction, so under the action of the magnetic field, the moving constant-temperature heat conduction balls can move on the smooth support rod in a left-right circulating mode, the moving constant-temperature heat conduction balls are made of heat conduction materials, the heat flow in the heat treatment furnace can be accelerated in the moving process, the temperature balance state (namely, the temperature of each position is consistent) in the heat treatment furnace can be quickly reached, meanwhile, when the moving constant-temperature heat conduction balls are heated to a certain degree, the separation layers are melted after being heated to melt the effervescing agents and the water filling layers, a large amount of gases are generated, the gases are sprayed out from the normally closed gas outlets, disturbed air flows are generated in the air flow in the inner part of the heat treatment furnace, the temperature balance and the uniformity of the heat treatment furnace are further accelerated, the heat treatment furnace, the heat treatment quality of the die steel is effectively improved, the heat treatment is avoided, the uneven heat treatment effect of the die steel is improved, and the effective toughness of the die steel is improved, and the non-resistant process of the die steel is improved.

Further, the normally closed gas outlet is including seting up at the inside cavity of first hollow heat conduction spheroid, still set up a plurality of evenly distributed's connecting pipe on the first hollow heat conduction spheroid, connecting pipe one end is linked together with heat conduction parcel in situ portion, and the connecting pipe other end is linked together with the cavity is inside, the one end that the connecting pipe is close to heat conduction parcel layer is fixed with ventilative barrier film, a plurality of ventholes have been seted up with first arc permanent magnet department of correspondence on the first hollow heat conduction spheroid, and the venthole is inside to be fixed with sealing rubber layer, sealing rubber layer includes two rubber blocks of fixing on the venthole inner wall, and rubber block looks butt. When effervescence disintegrating agent produces gas after with the water filling layer contact, inside gas got into the cavity by ventilative barrier film to extrude sealing rubber layer, make it produce the gap toward the external pressure with sealing rubber layer, and spout by gap department, speed in the twinkling of an eye when can effectively accelerate gas blowout, air current disturbance effect accelerates.

Furthermore, the thermal expansion connecting rod comprises an expansion cavity arranged at the outermost end of the thermal expansion connecting rod, a sealing piston matched with the expansion cavity is arranged in the expansion cavity, an expansion ejection rod is fixed at the center of the outer side wall of the sealing piston and penetrates through the thermal expansion connecting rod, a plurality of groups of compression springs are fixed between the sealing piston and the inner top of the expansion cavity, and a heat conduction expansion material is filled between the sealing piston and the inner bottom of the expansion cavity. When the heat conduction expanding material inside the thermal expansion connecting rod is heated, the heat conduction expanding material slowly expands, and when the heat conduction expanding material expands to a certain volume, the expansion ejection rod is pressed out of the thermal expansion connecting rod, and the first arc-shaped permanent magnet is pushed to move outwards, so that the sealing rubber layer slightly expands outwards, the gap on the sealing rubber layer is increased, and the generated gas is rapidly sprayed out.

Furthermore, the thermal expansion connecting rod is made of a thermal conductive material, so that the sensitivity of thermal expansion of the thermal conductive expansion material can be effectively improved, and the expansion ejection rod can be ejected out quickly after a certain temperature is reached.

Furthermore, the inside of the first hollow heat conduction ball body is filled with a plurality of graphite heat conduction layers, the graphite heat conduction layers have a good heat conduction effect, the temperature balance efficiency of the first hollow heat conduction ball body can be effectively improved, and the internal temperature of the heat treatment furnace is uniform in an acceleration mode.

Furthermore, a plurality of driving heat-conducting polishing balls and driven heat-conducting polishing balls are adsorbed on the outer wall of the heat-conducting cover, second annular alternating-current electromagnets which are arranged corresponding to the driving heat-conducting polishing balls and the driven heat-conducting polishing balls are arranged on the inner wall of the heat treatment furnace, the driving heat-conducting polishing balls comprise second hollow heat-conducting balls, a first outer polishing layer is fixed on the outer wall of each second hollow heat-conducting ball, a driving shaft is arranged at the center of the inner part of each second hollow heat-conducting ball, the end parts of the driving shafts are respectively connected with a bearing seat and a driving module, the bearing seats and the driving modules are in rolling fit with the inner wall of each second hollow heat-conducting ball, a plurality of connecting rods which are distributed in an annular shape are connected on the outer wall, and the end parts of the connecting rods are connected with driving permanent magnets;

passive heat conduction polishing ball includes the hollow heat conduction spheroid of third, be equipped with the second layer of polishing outward on the spheroidal outer wall of hollow heat conduction of third, the spheroidal inside of hollow heat conduction of third is equipped with second fixed stay ball, be connected with many dead levers that are the annular distribution on the outer wall of second fixed stay ball, the end connection of dead lever has second arc magnet and third arc permanent magnet, second arc magnet and third arc permanent magnet magnetic field opposite direction, and second arc magnet and the crisscross setting of third arc permanent magnet. When the upper heat conduction cover and the lower heat conduction cover fix the die steel, the driving heat conduction polishing ball and the driven heat conduction polishing ball are in full contact with the die steel, and the driving heat conduction polishing ball and the driven heat conduction polishing ball are magnetic, so that the driving heat conduction polishing ball and the driven heat conduction polishing ball can be adsorbed together, after the second annular alternating current electromagnet is started, the driving heat conduction polishing ball and the driven heat conduction polishing ball can move left and right under the action of a second annular alternating current electromagnet magnetic field, the first outer polishing layer and the second outer polishing layer on the surfaces of the driving heat conduction polishing balls are utilized to effectively polish and polish the surface of the die steel, and due to the driving shaft rotatably arranged in the second hollow heat conduction ball, the driving module drives the connecting rod to rotate after being started, the driving heat conduction polishing balls can drag a plurality of driven heat conduction polishing balls to irregularly rotate under the comprehensive action of the magnetic field, and polish while conducting heat, so that the polishing performance of the die steel is effectively improved.

Furthermore, the second hollow heat-conducting sphere and the third hollow heat-conducting sphere are both made of hard heat-conducting materials, and light heat-conducting materials are filled in the third hollow heat-conducting sphere. The driving heat-conducting polishing ball and the driven heat-conducting polishing ball have better heat-conducting effect, are in full contact with each other uniformly, and can further improve the temperature uniformity efficiency.

Furthermore, a plurality of uniformly distributed rolling grooves are formed in the outer wall of one side, close to the inner wall of the second hollow heat-conducting sphere, of the bearing seat and the outer wall of one side, balls are embedded into the rolling grooves, and lubricating media are coated on the outer walls of the balls. The balls are arranged, so that the bearing seat and the driving module can be guaranteed to freely roll on the inner wall of the second hollow heat-conducting sphere, friction is greatly reduced, and the driving shaft can be guaranteed to freely move in the second hollow heat-conducting sphere.

A heat treatment process for improving corrosion resistance, toughness and polishing performance of die steel comprises the following steps:

s1, preparing die steel, and placing the die steel on a heat conduction cover on the lower side after the surface of the die steel is subjected to primary polishing;

s2, starting a heating module in the heat treatment furnace and a first annular alternating current electromagnet and a second annular alternating current electromagnet on the inner wall of the heat treatment furnace, and carrying out heat treatment on the die steel;

s3, in the heat treatment process, under the action of the first annular alternating current electromagnet, the movable constant-temperature heat conduction balls move left and right on the smooth supporting rod, the temperature inside the heat treatment furnace is balanced, the temperature inside the heat treatment furnace rapidly reaches a uniform state, the heat treatment quality of the die steel is improved, and under the action of the second annular alternating current electromagnet, the plurality of driving heat conduction polishing balls and the driven heat conduction polishing balls rotate to polish the surface of the die steel, so that the polishing performance is improved;

and S4, after the specified heat treatment time is reached, closing the heating wood block, the first annular alternating current electromagnet and the second annular alternating current electromagnet in the heat treatment furnace, and taking out the die steel for the next process treatment.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) This scheme is at the inside multiunit sport type constant temperature heat conduction ball that sets up of thermal treatment, through doing irregular motion in thermal treatment stove inside when thermal treatment, and produce the higher disturbance air current of stranded intensity in the motion process, the temperature balance inside the furnace of thermal treatment with higher speed is even, effectively promote the thermal treatment quality to the mould steel, avoid being heated inhomogeneous phenomenon because of the inhomogeneous mould steel that leads to of the inside temperature of thermal treatment stove, effectively promote thermal treatment technological effect, effectively promote comprehensive properties such as corrosion resistance, toughness after the mould steel thermal treatment.

(2) When effervescence disintegrating agent produced gas after with the water filling layer contact, it is inside that gaseous gets into the cavity by ventilative barrier film to extrude sealing rubber layer, press out sealing rubber layer toward the external pressure and make it produce the gap, and by the blowout of gap department, speed in the twinkling of an eye when can effectively accelerating gas blowout, air current disturbance effect accelerates.

(3) When the heat conduction expanding material inside the thermal expansion connecting rod is heated, the heat conduction expanding material slowly expands, and when the heat conduction expanding material expands to a certain volume, the expansion ejection rod is pressed out of the thermal expansion connecting rod, and the first arc-shaped permanent magnet is pushed to move outwards, so that the sealing rubber layer slightly expands outwards, the gap on the sealing rubber layer is increased, and the generated gas is rapidly sprayed out.

(4) The thermal expansion connecting rod is made of a heat conduction material, so that the sensitivity of thermal expansion of the heat conduction expansion material can be effectively improved, and the expansion ejection rod can be ejected out quickly after the certain temperature is reached.

(5) The inside of the first hollow heat conduction ball body is filled with a plurality of graphite heat conduction layers, the graphite heat conduction layers have a better heat conduction effect, the temperature balance efficiency of the first hollow heat conduction ball body can be effectively improved, and the temperature inside the acceleration heat treatment furnace is uniform.

(6) When the upper heat conduction cover and the lower heat conduction cover fix the die steel, the driving heat conduction polishing ball and the driven heat conduction polishing ball are in full contact with the die steel, and the driving heat conduction polishing ball and the driven heat conduction polishing ball are magnetic, so that the driving heat conduction polishing ball and the driven heat conduction polishing ball can be adsorbed together, after the second annular alternating current electromagnet is started, the driving heat conduction polishing ball and the driven heat conduction polishing ball can move left and right under the action of a second annular alternating current electromagnet magnetic field, the first outer polishing layer and the second outer polishing layer on the surfaces of the driving heat conduction polishing balls are utilized to effectively polish and polish the surface of the die steel, and due to the driving shaft rotatably arranged in the second hollow heat conduction ball, the driving module drives the connecting rod to rotate after being started, the driving heat conduction polishing balls can drag a plurality of driven heat conduction polishing balls to irregularly rotate under the comprehensive action of the magnetic field, and polish while conducting heat, so that the polishing performance of the die steel is effectively improved.

(7) The driving heat-conducting polishing ball and the driven heat-conducting polishing ball have good heat-conducting effect, and are fully contacted with each other by even die steel, so that the temperature uniformity efficiency can be further improved.

(8) The balls are arranged to ensure that the bearing seat and the driving module can freely roll on the inner wall of the second hollow heat-conducting sphere, so that friction is greatly reduced, and the driving shaft can be ensured to freely move in the second hollow heat-conducting sphere.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a state diagram of the present invention in operation;

FIG. 3 is another state diagram of the present invention in operation;

FIG. 4 is a schematic view of the internal structure of the sport constant temperature heat-conducting ball of the present invention;

FIG. 5 is an enlarged schematic view of the structure at A in FIG. 4;

FIG. 6 is a schematic view of a portion of a thermally expandable connecting rod according to the present invention;

FIG. 7 is a diagram of the working state of the moving constant temperature heat-conducting ball of the present invention;

FIG. 8 is a schematic view of the internal structure of the driving heat-conducting polishing ball according to the present invention;

FIG. 9 is an enlarged view of the structure at B in FIG. 8;

FIG. 10 is a schematic diagram of the internal structure of a passive thermal conductive polishing ball according to the present invention.

The numbering in the figures illustrates:

1 heat treatment furnace, 2 smooth support rods, 3 motion type constant temperature heat conduction balls, 4 first annular alternating current electromagnets, 5 electric telescopic rods, 6 heat conduction covers, 7 drive heat conduction polishing balls, 701 second hollow heat conduction balls, 702 first outer polishing layers, 703 drive modules, 704 bearing seats, 705 drive shafts, 706 connecting rods, 707 drive permanent magnets, 708 rolling grooves, 709 balls, 8 passive heat conduction polishing balls, 801 third hollow heat conduction balls, 802 second outer polishing layers, 803 second fixed support balls, 804 fixed rods, 805 second arc magnets, 806 third arc permanent magnets, 9 second annular alternating current electromagnets, 10 first hollow heat conduction balls, 11 first fixed support balls, 12 thermal expansion connecting rods, 121 expansion cavities, 122 sealing pistons, 123 expansion ejection rods, 124 compression springs, 125 heat conduction expansion materials, 13 first arc permanent magnets, 14 heat conduction wrapping layers, 15 heat melting separation layers, 16 effervescent disintegrants, 17 water filling layers, 18 cavities, 19 connecting pipes, 20 air permeable barrier films, 21 sealing rubber layers and 22 graphite heat conduction layers.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, which are merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Example 1:

referring to fig. 1-3, a heat treatment system for die steel with improved corrosion resistance, toughness and polishing performance comprises a heat treatment furnace 1, wherein a plurality of groups of smooth support rods 2 are arranged on the upper side and the lower side of the interior of the heat treatment furnace 1, a moving constant-temperature heat conduction ball 3 is arranged on each group of smooth support rods 2, a first annular alternating current electromagnet 4 corresponding to the moving constant-temperature heat conduction ball 3 is fixed on the inner wall of the heat treatment furnace 1, electric telescopic rods 5 are arranged on the inner walls of the upper side and the lower side of the heat treatment furnace 1, and the end parts of the electric telescopic rods 5 are connected with a heat conduction cover 6;

referring to fig. 1-4 and 7, the movable constant temperature heat conducting ball 3 includes a first hollow heat conducting ball 10, a first fixing support ball 11 is disposed at the center of the inside of the first hollow heat conducting ball 10, a plurality of heat expansion connecting rods 12 distributed in a spherical shape are fixed on the outer wall of the first fixing support ball 11, the end of each heat expansion connecting rod 12 is connected with a first arc-shaped permanent magnet 13, a heat conducting wrapping layer 14 is fixed inside the first hollow heat conducting ball 10 and located between adjacent heat expansion connecting rods 12, a heat melting separation layer 15 is disposed inside the heat conducting wrapping layer 14, the heat conducting wrapping layer 14 is divided into two filling cavities by the heat melting separation layer 15, an effervescent disintegrant 16 and a water filling layer 17 are respectively filled in the two filling cavities, and a normally closed air outlet is disposed on the first hollow heat conducting ball 10.

When the heat treatment system works, the die steel is placed on the heat conduction cover 6 on the lower side, the electric telescopic rods 5 are simultaneously opened to fix the die steel by utilizing the two heat conduction covers 6, the heating module on the heat treatment furnace 1 is simultaneously opened to carry out heat treatment on the die steel, the first annular alternating current electromagnet 4 is opened to generate a magnetic field with constantly changing directions in the heat treatment process, the first arc-shaped permanent magnet 13 in the moving constant-temperature heat conduction ball 3 is arranged in the same direction, so the moving constant-temperature heat conduction ball 3 can circularly move left and right on the smooth support rod 2 under the action of the magnetic field, the moving constant-temperature heat conduction ball 3 is made of heat conduction materials, the heat flow in the heat treatment furnace 1 can be accelerated in the moving process, the temperature in the heat treatment furnace 1 is quickly balanced, namely the temperatures in all places are consistent, please refer to figure 7, meanwhile, when the moving constant-temperature heat conduction ball 3 is heated to a certain degree, the heated melting separation layer 15 melts the effervescent agent 16 and the water filling layer 17 to contact, a large amount of gas is generated, the generated by the gas is normally closed and sprayed out, the gas flow generated in the heat treatment furnace 1, the heat treatment furnace 1 can further accelerate the temperature, the effective temperature of the effective heat treatment of the uniform steel, and the effective heat treatment process of the uneven die, and the effective improvement of the die.

Referring to fig. 4-5, the normally closed air outlet includes a cavity 18 formed inside the first hollow heat conductive sphere 10, a plurality of connecting pipes 19 are further disposed on the first hollow heat conductive sphere 10, one end of each connecting pipe 19 is connected to the inside of the heat conductive coating layer 14, and the other end of each connecting pipe 19 is connected to the inside of the cavity 18, an air permeable barrier film 20 is fixed at one end of each connecting pipe 19 close to the heat conductive coating layer 14, a plurality of air outlets are disposed at positions of the first hollow heat conductive sphere 10 corresponding to the first arc-shaped permanent magnets 13, sealing rubber layers 21 are fixed inside the air outlets, each sealing rubber layer 21 includes two rubber blocks fixed on inner walls of the air outlets, and the rubber blocks are abutted against each other. When the effervescent disintegrant 16 and the water filling layer 17 are contacted to generate gas, the gas enters the cavity 18 through the breathable barrier film 20, the sealing rubber layer 21 is extruded outwards to generate gaps, the gas is sprayed out from the gaps, the instant speed of the gas in the spraying process can be effectively accelerated, and the gas flow disturbance effect is accelerated.

Referring to fig. 4 and 6, the thermal expansion connecting rod 12 includes an expansion cavity 121 formed at the outermost end of the thermal expansion connecting rod 12, a sealing piston 122 is disposed inside the expansion cavity 121, an expansion ejection rod 123 is fixed at the center of the outer sidewall of the sealing piston 122, the expansion ejection rod 123 is disposed through the thermal expansion connecting rod 12, a plurality of sets of compression springs 124 are fixed between the sealing piston 122 and the inner top of the expansion cavity 121, and a thermal expansion material 125 is filled between the sealing piston 122 and the inner bottom of the expansion cavity 121. When the thermal expansion material 125 inside the thermal expansion connecting rod 12 is heated, it expands slowly, and when the thermal expansion material 125 expands to a certain volume, it presses the expansion ejection rod 123 out of the thermal expansion connecting rod 12, and pushes the first arc permanent magnet 13 to move outwards, so that the sealing rubber layer 21 expands outwards slightly, the gap on the sealing rubber layer 21 is increased, and the generated gas is ejected quickly.

Referring to fig. 6, the thermal expansion connecting rod 12 is made of a thermal conductive material, so that the thermal expansion sensitivity of the thermal conductive expansion material 125 can be effectively improved, and the expansion ejection rod 123 can be ejected quickly after a certain temperature is reached.

Referring to fig. 4, the first hollow heat-conducting sphere 10 is further filled with a plurality of graphite heat-conducting layers 22, and the graphite heat-conducting layers 22 have a better heat-conducting effect, so as to effectively improve the temperature balance efficiency of the first hollow heat-conducting sphere 10 and accelerate the temperature uniformity inside the heat treatment furnace 1.

Referring to fig. 1-3 and 8, a plurality of driving heat-conducting polishing balls 7 and passive heat-conducting polishing balls 8 are adsorbed on the outer wall of the heat-conducting cover 6, a second annular ac electromagnet 9 is disposed on the inner wall of the heat treatment furnace 1 corresponding to the driving heat-conducting polishing balls 7 and the passive heat-conducting polishing balls 8, the driving heat-conducting polishing balls 7 include a second hollow heat-conducting ball 701, a first outer polishing layer 702 is fixed on the outer wall of the second hollow heat-conducting ball 701, a driving shaft 705 is disposed at the center of the interior of the second hollow heat-conducting ball 701, a bearing seat 704 and a driving module 703 are respectively connected to the end of the driving shaft 705, the bearing seat 704 and the driving module 703 are respectively in rolling fit with the inner wall of the second hollow heat-conducting ball 701, a plurality of connecting rods 706 distributed in an annular shape are connected to the outer wall of the second hollow heat-conducting ball 701, and a driving permanent magnet 707 is connected to the end of the connecting rod 706;

referring to fig. 1-3 and 9, the passive heat-conducting polishing ball 8 includes a third hollow heat-conducting ball 801, a second outer polishing layer 802 is disposed on an outer wall of the third hollow heat-conducting ball 801, a second fixing support ball 803 is disposed inside the third hollow heat-conducting ball 801, a plurality of fixing rods 804 annularly distributed are connected to an outer wall of the second fixing support ball 803, an end of each fixing rod 804 is connected to a second arc-shaped magnet 805 and a third arc-shaped permanent magnet 806, magnetic fields of the second arc-shaped magnet 805 and the third arc-shaped permanent magnet 806 are opposite in direction, and the second arc-shaped magnet 805 and the third arc-shaped permanent magnet 806 are alternately disposed. When the upper and lower heat conduction covers 6 fix the die steel, the driving heat conduction polishing ball 7 and the driven heat conduction polishing ball 8 are in full contact with the die steel, and because the driving heat conduction polishing ball 7 and the driven heat conduction polishing ball 8 are both magnetic, the driving heat conduction polishing ball 7 and the driven heat conduction polishing ball 8 are adsorbed together, after the second annular alternating current electromagnet 9 is started, the driving heat conduction polishing ball 7 and the driven heat conduction polishing ball 8 move left and right under the action of the magnetic field of the second annular alternating current electromagnet 9, the first outer polishing layer 702 and the second outer polishing layer 802 on the surfaces of the driving heat conduction polishing balls are utilized to effectively polish and polish the surface of the die steel, and because the driving shaft 705 is rotatably arranged in the second hollow heat conduction ball 701, the driving connecting rod 706 is driven to rotate after the driving module 703 is started, the driving heat conduction polishing ball 7 can pull the plurality of driven heat conduction polishing balls 8 to irregularly rotate under the comprehensive action of the magnetic field, polishing performance of the die steel is effectively improved.

Referring to fig. 8 and 10, the second hollow heat-conducting sphere 701 and the third hollow heat-conducting sphere 801 are made of a hard heat-conducting material, and the third hollow heat-conducting sphere 801 is further filled with a light heat-conducting material. The driving heat-conducting polishing ball 7 and the passive heat-conducting polishing ball 8 have good heat-conducting effect, and are fully contacted with each other uniformly, so that the temperature uniformity efficiency can be further improved.

Referring to fig. 8-9, a plurality of rolling grooves 708 are uniformly distributed on the outer walls of the bearing housing 704 and the driving shaft 705 on the side close to the inner wall of the second hollow heat-conducting sphere 701, a ball 709 is embedded in the rolling groove 708, and a lubricating medium is coated on the outer wall of the ball 709. The arrangement of the balls 709 can ensure that the bearing block 704 and the driving module 703 can freely roll on the inner wall of the second hollow heat-conducting sphere 701, so as to greatly reduce the friction force and ensure that the driving shaft 705 can freely move inside the second hollow heat-conducting sphere 701.

s1, preparing die steel, and placing the die steel on a heat conduction cover 6 on the lower side after the surface of the die steel is subjected to primary polishing;

s2, starting a heating module in the heat treatment furnace 1 and a first annular alternating current electromagnet 4 and a second annular alternating current electromagnet 9 on the inner wall of the heat treatment furnace 1, and carrying out heat treatment on the die steel;

s3, in the heat treatment process, under the action of the first annular alternating-current electromagnet 4, the movable constant-temperature heat conduction balls 3 move left and right on the smooth support rod 2 to balance the temperature inside the heat treatment furnace 1, so that the temperature inside the heat treatment furnace 1 quickly reaches a uniform state, the heat treatment quality of the die steel is improved, and under the action of the second annular alternating-current electromagnet 9, the heat conduction polishing balls 7 and the passive heat conduction polishing balls 8 are driven to rotate to polish the surface of the die steel, so that the polishing performance is improved;

and S4, after the specified heat treatment time is reached, closing the heating wood block, the first annular alternating current electromagnet 4 and the second annular alternating current electromagnet 9 in the heat treatment furnace 1, and taking out the die steel for the next process treatment.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and modifications within the scope of the present invention.

Claims

1. The utility model provides a promote corrosion resistance, toughness and polishing nature mould steel thermal treatment system, includes heat treatment furnace (1), its characterized in that: a plurality of groups of smooth support rods (2) are arranged on the upper side and the lower side inside the heat treatment furnace (1), a moving type constant temperature heat conduction ball (3) is placed on each group of smooth support rods (2), a first annular alternating current electromagnet (4) which corresponds to the moving type constant temperature heat conduction ball (3) is fixed on the inner wall of the heat treatment furnace (1), electric telescopic rods (5) are arranged on the inner walls of the upper side and the lower side of the heat treatment furnace (1), and the end parts of the electric telescopic rods (5) are connected with heat conduction covers (6);

sports type constant temperature heat conduction ball (3) are including first hollow heat conduction spheroid (10), the inside center department of first hollow heat conduction spheroid (10) is equipped with first fixed stay ball (11), be fixed with many thermal energy connecting rods (12) that are spherical distribution on the outer wall of first fixed stay ball (11), the end connection of thermal energy connecting rod (12) has first arc permanent magnet (13), the inside of first hollow heat conduction spheroid (10) is located and is fixed with heat conduction parcel layer (14) between adjacent thermal energy connecting rod (12), the inside of heat conduction parcel layer (14) is equipped with and is heated and melts separate layer (15), it cuts apart into two packing chambeies with heat conduction parcel layer (14) to be heated and melts separate layer (15), and two packing intracavity parts do not fill effervescent disintegrant (16) and water filling layer (17), the normally closed gas outlet has been seted up on first hollow heat conduction spheroid (10).

2. The system of claim 1, wherein the system comprises: normally closed gas outlet is including offering cavity (18) in first hollow heat conduction spheroid (10) inside, still set up a plurality of evenly distributed's connecting pipe (19) on first hollow heat conduction spheroid (10), connecting pipe (19) one end is linked together with heat conduction parcel layer (14) inside, and connecting pipe (19) other end and cavity (18) inside are linked together, the one end that connecting pipe (19) are close to heat conduction parcel layer (14) is fixed with ventilative barrier film (20), correspond the department with first arc permanent magnet (13) on first hollow heat conduction spheroid (10) and seted up a plurality of ventholes, and venthole inside is fixed with sealing rubber layer (21), sealing rubber layer (21) include two rubber blocks of fixing on the venthole inner wall, and rubber block looks butt.

3. The system of claim 1, wherein the heat treatment system comprises: the thermal expansion connecting rod (12) comprises an expansion cavity (121) arranged at the outermost end of the thermal expansion connecting rod (12), a sealing piston (122) matched with the expansion cavity (121) is arranged inside the expansion cavity (121), an expansion ejection rod (123) is fixed at the center of the outer side wall of the sealing piston (122), the expansion ejection rod (123) penetrates through the thermal expansion connecting rod (12) and is arranged, multiple groups of compression springs (124) are fixed between the sealing piston (122) and the top in the expansion cavity (121), and a heat conduction expansion material (125) is filled between the sealing piston (122) and the bottom in the expansion cavity (121).

4. The system of claim 1, wherein the system comprises: the thermal expansion connecting rod (12) is made of heat conduction materials.

5. The system of claim 1, wherein the system comprises: the interior of the first hollow heat-conducting sphere (10) is also filled with a plurality of graphite heat-conducting layers (22).

6. The system of claim 1, wherein the system comprises: a plurality of driving heat-conducting polishing balls (7) and passive heat-conducting polishing balls (8) are adsorbed on the outer wall of the heat-conducting cover (6), second annular alternating-current electromagnets (9) which are arranged corresponding to the driving heat-conducting polishing balls (7) and the passive heat-conducting polishing balls (8) are arranged on the inner wall of the heat treatment furnace (1), each driving heat-conducting polishing ball (7) comprises a second hollow heat-conducting ball body (701), a first outer polishing layer (702) is fixed on the outer wall of each second hollow heat-conducting ball body (701), a driving shaft (705) is arranged at the center of the inner portion of each second hollow heat-conducting ball body (701), the end portions of the driving shafts (705) are respectively connected with a bearing block (704) and a driving module (703), the bearing block (704) and the driving module (703) are in rolling fit with the inner wall of each second hollow heat-conducting ball body (701), a plurality of connecting rods (706) which are distributed in an annular shape are connected with the outer wall of each connecting rod (701), and the end portions of the connecting rods (706) are connected with driving permanent magnets (707);

passive heat conduction polishing ball (8) are including third hollow heat conduction spheroid (801), be equipped with the outer layer of polishing of second (802) on the outer wall of third hollow heat conduction spheroid (801), the inside of third hollow heat conduction spheroid (801) is equipped with second fixed stay ball (803), be connected with many dead levers (804) that are the annular distribution on the outer wall of second fixed stay ball (803), the end connection of dead lever (804) has second arc magnet (805) and third arc permanent magnet (806), second arc magnet (805) and third arc permanent magnet (806) magnetic field opposite direction, and second arc magnet (805) and third arc permanent magnet (806) crisscross setting.

7. The system of claim 6, wherein the heat treatment system comprises: the second hollow heat-conducting sphere (701) and the third hollow heat-conducting sphere (801) are both made of hard heat-conducting materials, and light heat-conducting materials are filled in the third hollow heat-conducting sphere (801).

8. The system of claim 6, wherein the heat treatment system comprises: bearing frame (704) and drive shaft (705) all set up a plurality of evenly distributed's roll groove (708) on being close to one side outer wall of second hollow heat conduction spheroid (701) inner wall, the inside embedding in roll groove (708) has ball (709), scribble lubricating medium on the outer wall of ball (709).

9. A heat treatment process based on the heat treatment system for improving corrosion resistance, toughness and polishing property of die steel according to any one of claims 1-8, comprising the following steps:

s1, preparing die steel, and placing the die steel on a heat conduction cover (6) on the lower side after the surface of the die steel is subjected to primary polishing;

s2, starting a heating module in the heat treatment furnace (1) and a first annular alternating current electromagnet (4) and a second annular alternating current electromagnet (9) on the inner wall of the heat treatment furnace (1) to carry out heat treatment on the die steel;

s3, in the heat treatment process, under the action of the first annular alternating current electromagnet (4), the movable constant-temperature heat conduction balls (3) move left and right on the smooth support rod (2) to balance the temperature inside the heat treatment furnace (1), so that the temperature inside the heat treatment furnace (1) quickly reaches a uniform state, the heat treatment quality of the die steel is improved, and under the action of the second annular alternating current electromagnet (9), the plurality of driving heat conduction polishing balls (7) and the driven heat conduction polishing balls (8) rotate to polish the surface of the die steel, so that the polishing performance is improved;

and S4, after the specified heat treatment time is reached, closing the heating wood block, the first annular alternating current electromagnet (4) and the second annular alternating current electromagnet (9) in the heat treatment furnace (1), and taking out the die steel for the next process treatment.