CN114807532A - Method, structure and equipment for eliminating warping of steel of injection mold - Google Patents
Method, structure and equipment for eliminating warping of steel of injection mold Download PDFInfo
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- CN114807532A CN114807532A CN202210450201.6A CN202210450201A CN114807532A CN 114807532 A CN114807532 A CN 114807532A CN 202210450201 A CN202210450201 A CN 202210450201A CN 114807532 A CN114807532 A CN 114807532A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 73
- 239000010959 steel Substances 0.000 title claims abstract description 73
- 238000002347 injection Methods 0.000 title claims abstract description 36
- 239000007924 injection Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000010791 quenching Methods 0.000 claims abstract description 97
- 230000000171 quenching effect Effects 0.000 claims abstract description 97
- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 238000005086 pumping Methods 0.000 claims abstract description 39
- 238000009413 insulation Methods 0.000 claims abstract description 38
- 239000011261 inert gas Substances 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims description 46
- 238000010438 heat treatment Methods 0.000 claims description 37
- GALOTNBSUVEISR-UHFFFAOYSA-N molybdenum;silicon Chemical compound [Mo]#[Si] GALOTNBSUVEISR-UHFFFAOYSA-N 0.000 claims description 34
- 239000000919 ceramic Substances 0.000 claims description 29
- 238000003860 storage Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 10
- 238000004321 preservation Methods 0.000 claims description 8
- 238000005496 tempering Methods 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 5
- 230000008030 elimination Effects 0.000 claims 7
- 238000003379 elimination reaction Methods 0.000 claims 7
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000005261 decarburization Methods 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
Abstract
The invention discloses a method, a structure and equipment for eliminating the warping of steel of an injection mold, which comprise a quenching chamber shell with an opening at the bottom end and a heat insulation seat detachably connected with the quenching chamber shell, wherein an upper telescopic mechanism for driving the quenching chamber shell to move is arranged above the quenching chamber shell, a lower telescopic mechanism for driving the heat insulation seat to move is arranged below the heat insulation seat, the quenching chamber shell driven by the upper telescopic mechanism to move downwards is hermetically connected with the heat insulation seat driven by the lower telescopic mechanism to move upwards, a heat conduction mechanism is arranged in a sealed cavity surrounded by the quenching chamber shell and the heat insulation seat, one end of an air inlet hose and one end of an air outlet hose are respectively inserted and connected onto the quenching chamber shell, the other end of the air inlet hose is connected with an inert gas input system, and the other end of the air outlet hose is connected with a vacuum pumping system. By adopting the technical scheme, the sealed cavity chamber formed by the quenching chamber shell and the heat insulation seat forms the vacuum quenching cavity, so that the phenomena of oxidation and decarburization of steel of the quenching die are avoided.
Description
Technical Field
The invention relates to the technical field of injection mold steel production, in particular to a method, a structure and equipment for eliminating warping of injection mold steel.
Background
An injection mold is a tool for producing plastic products; the injection mold is also a tool for endowing a plastic product with a complete structure and an accurate size, the quality of the injection mold directly influences the quality of a processing technology, the precision yield and the production cost of the product, the quality of the injection mold is mainly influenced by a mold material and heat treatment besides the service life, the structural design and the processing precision of the injection mold, the material of the injection mold generally selects hot-work mold steel, the hot-work mold steel has high hardness, strength, red hardness, wear resistance and toughness, good high-temperature strength, thermal fatigue stability, thermal conductivity and corrosion resistance, and higher hardenability in addition, so as to ensure that the whole section has consistent mechanical properties,
in the heat treatment engineering of the injection mold steel, the mold steel is fed into a quenching chamber, the mold steel is easy to generate quenching oxidation and decarburization phenomena due to the existence of air in the quenching chamber, the strength of the decarburized mold steel is reduced and softened, the conditions of volume change, shape warping, distortion and the like of the mold steel are easy to generate, and the mold steel is difficult to trim after quenching, so that the quality of the injection mold is influenced.
Disclosure of Invention
The method, the structure and the equipment are used for solving the problems that quenching oxidation and decarburization are easy to occur due to the influence of air in the quenching heat treatment process of the injection mold steel, and the phenomena of volume change, shape warping, distortion and the like caused by heating and quenching of the mold steel are solved.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides an eliminate injection mold steel warpage equipment, including the quenching room casing that the bottom opening set up and with the thermal-insulated seat of dismantling the connection between the quenching room casing, be provided with the last telescopic machanism that is used for driving the displacement of quenching room casing in the top of quenching room casing, be provided with the lower telescopic machanism that is used for driving the displacement of thermal-insulated seat in the below of thermal-insulated seat, go up the quenching room casing that telescopic machanism drove and move down and carry out sealing connection between the thermal-insulated seat that drives the rebound by lower telescopic machanism, be provided with heat conduction mechanism in the sealed cavity that quenching room casing and thermal-insulated seat enclose, insert the one end of establishing connection air inlet hose and the hose of giving vent to anger on the quenching room casing respectively, inert gas input system is connected to the other end of air inlet hose, the other end of the hose of giving vent to anger is connected vacuum pumping system.
As a further scheme of the invention: the upper telescopic mechanism comprises a first air cylinder, the telescopic tail end of the first air cylinder is fixedly connected with the quenching chamber shell through a base plate, the top end of the first air cylinder is hung on the equipment shell through a bolt, and the bottom end of the equipment shell is provided with an opening.
As a further scheme of the invention: the lower telescopic mechanism comprises a second air cylinder, the telescopic tail end of the second air cylinder is fixedly connected with a bottom sealing plate through a base plate, the bottom end of the second air cylinder is fixedly installed on the base through a bolt, and a heat insulation seat is installed on the bottom sealing plate in a positioning mode.
As a further scheme of the invention: the both ends of base are respectively through integrative assembled joint between extension board frame and the equipment casing, and slide between the curb plate end of extension board frame and end seal board and insert and establish the connection, and end seal board is used for sealing or unsealing the opening bottom of sealing equipment casing.
As a further scheme of the invention: the heat conducting mechanism comprises a plurality of silicon-molybdenum rods and a ceramic base plate, the ceramic base plate is installed on the heat insulating base in a locating mode, the silicon-molybdenum rods are all in contact with the ceramic base plate for conducting heat, the silicon-molybdenum rods are sequentially in electric conduction and series connection, and electrode connectors installed on the quenching chamber shell are used for being electrically connected with the silicon-molybdenum rods.
As a further scheme of the invention: the inert gas input system comprises an air suction pump outlet end connected with an air inlet hose through a short pipe II, an air suction pump inlet end connected with an air suction storage tank II through an air inlet pipe, and a pipe valve I is mounted on the air inlet pipe.
As a further scheme of the invention: the air inlet pipe is connected with one end of the air return hose through a return pipe, the other end of the air return hose is inserted and connected with the quenching chamber shell, and a pipe valve II is installed on the air return hose.
As a further scheme of the invention: the vacuum pumping system comprises a vacuum pump, wherein the inlet end of the vacuum pump is connected with a pumping hose through a short pipe, the outlet end of the vacuum pump is connected with a pumping storage tank through an air outlet pipe, and a vacuum valve is arranged on the air outlet pipe.
As a further scheme of the invention: and a temperature sensor is inserted and installed on the top wall of the shell of the quenching chamber, and the temperature sensor adopts a thermocouple temperature sensor.
As a further scheme of the invention: the use method of the equipment for eliminating the warping of the steel of the injection mold comprises the following steps:
the method comprises the following steps: placing the die steel to be quenched on a ceramic base plate;
step two: the lower telescoping mechanism drives the bottom sealing plate and the heat insulation seat to move upwards, the upwards moving bottom sealing plate is abutted against the open bottom end of the equipment shell, the upper telescoping mechanism drives the quenching chamber shell to move downwards, and the heat insulation seat is abutted against the open bottom end of the quenching chamber shell in a sealing manner, so that a plurality of silicon-molybdenum rods of the heat conduction mechanism are all in contact with the ceramic base plate for heat conduction;
step three: after a shell of the quenching chamber and the heat insulation seat form a sealed chamber, a vacuum valve on an air outlet pipe is opened, the vacuum pump of the vacuum pumping system is started to work, air in the sealed chamber is conveniently pumped by a pumping hose, and the pumped air enters a pumping storage tank I;
step four: after the negative pressure vacuum air exhaust of the sealed cavity is finished, opening a first pipe valve on the air inlet pipe, starting an air exhaust pump of the inert gas input system to work, and pumping the inert gas in the air exhaust storage tank II out of the air inlet pipe and conveying the inert gas into the sealed cavity through an air inlet hose;
step five: after inert gas is input into the sealed cavity, the circuit is connected through the electrode connector, so that the silicon-molybdenum rods are electrified and heated, the generated heat is transferred to the ceramic base plate, the temperature in the sealed cavity is raised to 1100 ℃ of the austenitizing temperature, and the uniform quenching heat treatment of the placed die steel is realized;
step six: after the uniform quenching heat treatment is finished, electrifying and heating a plurality of silicon-molybdenum rods to 550 ℃, and carrying out heat preservation tempering treatment;
step seven: after the heat preservation tempering is finished, turning off a plurality of silicon-molybdenum rods to be electrified, and performing circulating air cooling through an air inlet hose and an air return hose to realize the cooling treatment of the die steel;
step eight: after the cooling treatment, the bottom sealing plate and the heat insulation seat are conveniently driven by the lower telescopic mechanism, the heat-treated die steel is conveniently separated from the equipment shell, and the next batch of die steel is conveniently taken out and replaced for quenching heat treatment.
The invention has the beneficial effects that:
(1) the lower telescopic mechanism drives the bottom sealing plate and the heat insulation seat to move, so that feeding and discharging of die steel before and after quenching heat treatment are conveniently realized, the upper telescopic mechanism drives the quenching chamber shell moving downwards and the heat insulation seat moving upwards under the driving of the lower telescopic mechanism to be in sealing connection, and a sealed cavity defined by the quenching chamber shell and the heat insulation seat can be used for pumping out feeding air, so that a vacuum heat treatment cavity is formed;
(2) the vacuum air extraction system is convenient for extracting air in the sealed cavity and storing the air in the air extraction storage tank I, so that the influence of residual air in feeding in the sealed cavity on quenching heat treatment of the die steel is avoided, the inert gas input system is convenient for inputting inert gas into the sealed cavity, the gas atmosphere protection is carried out on the die steel subjected to quenching heat treatment, and a decarburized layer is prevented from being formed on the surface of the die steel;
(3) the heat generated by the plurality of silicon-molybdenum rods and the ceramic base plate is used for quenching heat treatment of the die steel, so that the temperature in the sealed chamber is homogenized, and the phenomena of volume change, shape warping, distortion and the like of the die steel caused by heating temperature difference are avoided.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of an apparatus for eliminating warping of steel of an injection mold;
FIG. 2 is a schematic cross-sectional view of an apparatus for removing warpage from steel for injection molds;
FIG. 3 is a schematic cross-sectional view of an upper quenching chamber housing of the apparatus for eliminating warping of injection mold steel;
FIG. 4 is a bottom view of the upper quenching chamber housing of the apparatus for removing warping of injection mold steel;
FIG. 5 is a top view of a lower heat insulation seat of the apparatus for eliminating warping of steel of an injection mold;
FIG. 6 is a schematic view of a ceramic shim plate of the apparatus for removing warping of steel of an injection mold;
FIG. 7 is a schematic view of an air suction hose of the apparatus for removing warping of steel of an injection mold.
In the figure: 1. a quenching chamber housing; 2. a heat insulation seat; 200. a sealing groove; 201. a slot hole; 3. a ceramic backing plate; 300. inserting a column; 4. an air intake hose; 5. an air extraction hose; 6. a return air hose; 7. a side ear plate; 8. a silicon-molybdenum rod; 9. an electrode tab; 10. a first cylinder; 11. an equipment housing; 12. a support plate frame; 13. a base; 130. sinking the slot hole; 14. a second air cylinder; 15. a bottom sealing plate; 16. a vacuum pump; 17. A short pipe I; 18. an air outlet pipe; 19. a first air pumping storage tank; 20. a vacuum valve; 21. a first ear box; 22. An air pump; 23. a second short pipe; 24. an air inlet pipe; 25. a second air pumping storage tank; 26. a first pipe valve; 27. A second ear box; 28. a return pipe; 29. a pipe valve II; 30. a temperature sensor; 31. the pipe orifice sleeve head.
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 of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-7, the invention is an apparatus for eliminating steel warpage of an injection mold, comprising a quenching chamber housing 1 with an opening at the bottom end and a heat insulation base 2 detachably connected between the quenching chamber housing 1, wherein an upper telescopic mechanism for driving the quenching chamber housing 1 to move is arranged above the quenching chamber housing 1, the upper telescopic mechanism comprises a cylinder one 10, the telescopic tail end of the cylinder one 10 is fixedly connected with the quenching chamber housing 1 through a backing plate, the top end of the cylinder one 10 is hung on the apparatus housing 11 through a bolt, the opening at the bottom end of the apparatus housing 11 is arranged, and the cylinder one 10 is used for driving the quenching chamber housing 1 to move up and down.
Be provided with the lower telescopic mechanism that is used for driving the displacement of thermal-insulated seat 2 in thermal-insulated seat 2's below, lower telescopic mechanism is including two 14 cylinders, and backing plate fixed connection end sealing plate 15 is passed through to two 14 flexible tail ends of cylinder, and bolt fixed mounting is passed through on base 13 in two 14's bottom of cylinder, and two 14 cylinders of location connection are located in the heavy slotted hole 130 that base 13 was seted up, and thermal-insulated seat 2 of location installation is gone up to end sealing plate 15, is convenient for drive end sealing plate 15 and thermal-insulated seat 2 displacement from top to bottom through two 14 cylinders.
Go up and carry out sealing connection between the thermal-insulated seat 2 that telescopic machanism drove the quenching room casing 1 that moves down and drive by lower telescopic machanism, seted up seal groove 200 on the top face of thermal-insulated seat 2, the bottom end of connecting quenching room casing 1 is established in the seal groove 200 of seting up interpolation, realizes that quenching room casing 1 and thermal-insulated seat 2 peg graft from top to bottom sealed, and the sealed cavity that quenching room casing 1 and thermal-insulated seat 2 enclose can be taken out from the material loading air, and then forms the vacuum heat treatment cavity.
One end of an air outlet hose 5 is inserted and connected to the quenching chamber shell 1, the other end of the air outlet hose 5 is connected with a vacuum air pumping system, the vacuum air pumping system comprises a vacuum pump 16, the inlet end of the vacuum pump is connected with the air pumping hose 5 through a short pipe I17, the outlet end of the vacuum pump 16 is connected with an air pumping storage tank I19 through an air outlet pipe 18, a vacuum valve 20 is installed on the air outlet pipe 18, the vacuum pump 16 is fixedly installed in an ear box I21, the ear box I21 is installed outside the equipment shell 11, air in the sealed cavity is conveniently pumped out and stored in the air pumping storage tank I19 through the vacuum air pumping system, and the influence of residual air in feeding in the sealed cavity on quenching heat treatment of die steel is avoided.
One end of an air inlet hose 4 is inserted and connected to the quenching chamber shell 1, the other end of the air inlet hose 4 is connected with an inert gas input system, the outlet end of an air pump 22 included in the inert gas input system is connected with the air inlet hose 4 through a second short pipe 23, the inlet end of the air pump 22 is connected with a second air extraction storage tank 25 through an air inlet pipe 24, a first pipe valve 26 is installed on the air inlet pipe 24, the air pump 22 is fixedly installed in a second ear box 27, the second ear box 27 is installed outside the equipment shell 11, inert gas can be conveniently input into the sealed cavity through the inert gas input system, gas protection atmosphere is carried out on the die steel subjected to quenching heat treatment, and a decarburizing layer is prevented from being formed on the surface of the die steel.
Be provided with heat conduction mechanism in the sealed cavity that quenching room casing 1 and thermal-insulated seat 2 enclose, heat conduction mechanism includes a plurality of silicon molybdenum rod 8, ceramic backing plate 3, 3 location installations of ceramic backing plate are on thermal-insulated seat 2, be equipped with the post 300 of inserting of a plurality of body structures on 3 diapalls of ceramic backing plate, a plurality of slotted holes 201 have been seted up on the 2 top surfaces of thermal-insulated seat, be used for inserting respectively in a plurality of slotted holes 201 and establish the connection and insert post 300, make ceramic backing plate 3 stably set up on thermal-insulated seat 2, insert and establish simple to operate, be convenient for change and maintain ceramic backing plate 3.
A plurality of silicon molybdenum stick 8 all contacts heat conduction with ceramic backing plate 3, a plurality of silicon molybdenum stick 8 sets up on side otic placode 7 side by side, a structural connection is on quenching room casing 1 inner wall for 7 a body of side otic placode, and the setting of establishing ties of conducting electricity in proper order between a plurality of silicon molybdenum stick 8, the electrode joint 9 of installation is used for electric connection silicon molybdenum stick 8 on the quenching room casing 1, through a plurality of silicon molybdenum stick 8 that sets up, the heat that ceramic backing plate 3 produced quenches heat treatment to mould steel, make the temperature homogenization in the sealed chamber, avoid the heating difference in temperature to cause mould steel volumetric change, shape warpage, phenomenons such as distortion take place.
In the embodiment, the two ends of the base 13 are respectively connected to the device housing 11 through the support plate frame 12, and the side plate ends of the support plate frame 12 and the bottom sealing plate 15 are slidably inserted into each other to facilitate the movement of the bottom sealing plate 15, so that the bottom sealing plate 15 is stably moved up and down, and the bottom sealing plate 15 is used for sealing or unsealing the open bottom end of the device housing 11.
In the embodiment, the air inlet pipe 24 is connected with one end of the air return hose 6 through the return pipe 28, the other end of the air return hose 6 is inserted and connected with the quenching chamber shell 1, the second pipe valve 29 is installed on the air return hose 6, and the arranged air return hose 6 can recycle high-temperature heat in the sealed cavity in the high-temperature quenching and heating process, so that the electric heating resource is saved, and the waste of the high-temperature heat accumulated in the sealed cavity can be avoided; and the air return hose 6 on the other surface can form circulating air cooling with the air inlet hose 4, so that the temperature reduction treatment of the die steel is realized.
In the embodiment, the two ends of the air inlet hose 4, the air exhaust hose 5 and the air return hose 6 are respectively provided with the pipe orifice sleeve heads 31 of an integrated structure, the pipe orifice sleeve heads 31 arranged at the two ends are respectively convenient to insert and connect the quenching chamber shell 1 and the equipment shell 11, and the sealing installation is stable and convenient.
In the embodiment, the temperature sensor 30 is inserted and installed on the top wall of the shell 1 of the quenching chamber, the temperature sensor 30 adopts a thermocouple temperature sensor, the temperature can be measured to 1800 ℃, the requirement of detecting the high-temperature quenching temperature is met, the temperature in the sealed cavity can be conveniently detected through the temperature sensor 30, and the heating temperature of the electrified silicon-molybdenum rod 8 can be conveniently controlled.
Example 2
Referring to fig. 1-7, a method for using an apparatus for removing warpage of steel in an injection mold includes the following steps:
the method comprises the following steps: placing the die steel to be quenched on the ceramic backing plate 3;
step two: the lower telescopic mechanism drives the bottom sealing plate 15 and the heat insulation seat 2 to move upwards, the upwards moving bottom sealing plate 15 is in sealing contact with the open bottom end of the equipment shell 11, the upper telescopic mechanism drives the quenching chamber shell 1 to move downwards, and the heat insulation seat 2 is in sealing contact with the open bottom end of the quenching chamber shell 1, so that a plurality of silicon-molybdenum rods 8 of the heat conducting mechanism are in contact with the ceramic base plate 3 to conduct heat;
step three: after a shell 1 of the quenching chamber and a heat insulation seat 2 enclose a sealed chamber, a vacuum valve 20 on an air outlet pipe 18 is opened, a vacuum pump 16 of a vacuum pumping system is started to work, air in the sealed chamber is conveniently pumped by a pumping hose 5, the pumped air enters a pumping storage tank I19, and the vacuum pressure in the sealed chamber is 6-8 MPa;
step four: after the negative pressure vacuum pumping of the sealed cavity is finished, opening a pipe valve I26 on an air inlet pipe 24, starting an air pump 22 of an inert gas input system to work, pumping the inert gas in an air pumping storage tank II 25 out of the air inlet pipe 24, conveying the inert gas into the sealed cavity through an air inlet hose 4, filling the inert gas into the sealed cavity, recovering the pressure of the inert gas to 1MPa, and protecting the die steel by the inert gas in a heat treatment atmosphere;
step five: after inert gas is input into the sealing chamber, the circuit is connected through the electrode joint 9, so that the silicon-molybdenum rods 8 are electrified to generate heat, the generated heat is transferred to the ceramic base plate 3, the temperature in the sealing chamber is raised to 1100 ℃ of the austenitizing temperature, and the uniform quenching heat treatment of the placed die steel is realized;
step six: after the uniform quenching heat treatment is finished, electrifying and heating a plurality of silicon-molybdenum rods 8 to 550 ℃, and carrying out heat preservation tempering treatment;
step seven: after the heat preservation tempering is finished, the plurality of silicon-molybdenum rods 8 are powered off, and the circular air cooling is carried out through the air inlet hose 4 and the air return hose 6, so that the temperature reduction treatment of the die steel is realized;
step eight: after the temperature reduction treatment, the bottom sealing plate 15 and the heat insulation seat 2 are conveniently driven by the lower telescopic mechanism, the heat-treated die steel is conveniently separated from the equipment shell 11, and the next batch of die steel is conveniently taken out and replaced for quenching heat treatment.
Example 3
Referring to fig. 1-7, a method for using an apparatus for removing warpage of steel in an injection mold includes the following steps:
the method comprises the following steps: the die steel to be quenched is placed on the ceramic backing plate 3, the ceramic backing plate 3 has good heat conducting performance, and the bottom wall of the die steel can be quenched conveniently by heating at high temperature;
step two: the lower telescopic mechanism drives the bottom sealing plate 15 and the heat insulation seat 2 to move upwards, the upwards moving bottom sealing plate 15 is in sealing contact with the open bottom end of the equipment shell 11, the upper telescopic mechanism drives the quenching chamber shell 1 to move downwards, the heat insulation seat 2 is in sealing contact with the open bottom end of the quenching chamber shell 1, a plurality of silicon-molybdenum rods 8 of the heat conduction mechanism are in contact with the ceramic liner plate 3 to conduct heat, the equipment shell 11, the quenching chamber shell 1, the bottom sealing plate 15 and the heat insulation seat 2 are made of high-aluminum type aluminum silicate fiber materials, the high temperature resistance can reach 1800 ℃, the heat conduction coefficient is as low as 0.026w/mk, the high-temperature resistant and heat insulation performance is achieved, and the high-temperature quenching heat is prevented from being dissipated outwards;
step three: after a sealed cavity is enclosed by the quenching chamber shell 1 and the heat insulation seat 2, a vacuum valve 20 on an air outlet pipe 18 is opened, a vacuum pump 16 of a vacuum pumping system is started to work, air in the sealed cavity is conveniently pumped by a pumping hose 5, the pumped air enters a pumping storage tank I19, the vacuum pressure in the sealed cavity is 6-8MPa, the pumping hose 5 is made of alkali-free glass fiber materials, and the quenching chamber is resistant to high temperature of 1650 ℃ at most, safe and environment-friendly;
step four: after the negative pressure vacuum pumping of the sealed chamber is finished, opening a pipe valve I26 on an air inlet pipe 24, starting an air pump 22 of an inert gas input system to work, pumping the inert gas in an air pumping storage tank II 25 out of the air inlet pipe 24, conveying the inert gas into the sealed chamber through an air inlet hose 4, filling the inert gas into the sealed chamber, recovering the pressure of the inert gas to 1MPa, protecting the heat treatment atmosphere of the die steel by the inert gas, and enabling the air inlet hose 4 to be made of alkali-free glass fiber materials, resistant to the high temperature of 1650 ℃ at most and safe and environment-friendly;
step five: after inert gas is input into the sealed cavity, a circuit is connected through the electrode joint 9, so that the silicon-molybdenum rods 8 are electrified and heated, the generated heat is transferred to the ceramic base plate 3, the temperature in the sealed cavity is raised to 1100 ℃ which is the austenitizing temperature, the uniform quenching heat treatment of the placed die steel is realized, the silicon-molybdenum rods 8 can resist the high temperature of 1700 ℃, the chemical stability is good, and the heat conduction reaction is rapid;
step six: after the uniform quenching heat treatment is finished, electrifying and heating a plurality of silicon-molybdenum rods 8 to 550 ℃, and carrying out heat preservation tempering treatment;
step seven: after the heat preservation tempering is finished, the plurality of silicon-molybdenum rods 8 are powered off, the air inlet hose 4 and the air return hose 6 are used for carrying out circulating air cooling, the cooling treatment of the die steel is realized, the air return hose 6 is made of alkali-free glass fiber materials, the highest temperature can be resistant to 1650 ℃, and the safety and the environmental protection are realized;
step eight: after the temperature reduction treatment, the bottom sealing plate 15 and the heat insulation seat 2 are conveniently driven by the lower telescopic mechanism, the heat-treated die steel is conveniently separated from the equipment shell 11, and the next batch of die steel is conveniently taken out and replaced for quenching heat treatment.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (10)
1. The equipment for eliminating the warping of the steel of the injection mold is characterized by comprising a quenching chamber shell (1) with an opening at the bottom end and a heat insulation seat (2) detachably connected with the quenching chamber shell (1), wherein an upper telescopic mechanism used for driving the quenching chamber shell (1) to move is arranged above the quenching chamber shell (1), a lower telescopic mechanism used for driving the heat insulation seat (2) to move is arranged below the heat insulation seat (2), the quenching chamber shell (1) driven by the upper telescopic mechanism to move downwards is in sealed connection with the heat insulation seat (2) driven by the lower telescopic mechanism to move upwards, a heat conduction mechanism is arranged in a sealed cavity surrounded by the quenching chamber shell (1) and the heat insulation seat (2), one end connected with an air inlet hose (4) and an air outlet hose (5) is respectively inserted in the quenching chamber shell (1), the other end of the air inlet hose (4) is connected with an inert gas input system, the other end of the air outlet hose (5) is connected with a vacuum pumping system.
2. An injection mold steel warping elimination apparatus according to claim 1, wherein the upper telescopic mechanism comprises a first cylinder (10), the telescopic tail end of the first cylinder (10) is fixedly connected with the quenching chamber housing (1) through a base plate, the top end of the first cylinder (10) is hung on the apparatus housing (11) through a bolt, and the bottom end of the apparatus housing (11) is provided with an opening.
3. The equipment for eliminating the warping of the steel of the injection mold according to claim 1, wherein the lower telescopic mechanism comprises a second air cylinder (14), the telescopic tail end of the second air cylinder (14) is fixedly connected with a bottom sealing plate (15) through a backing plate, the bottom end of the second air cylinder (14) is fixedly installed on the base (13) through a bolt, and the heat insulation seat (2) is installed on the bottom sealing plate (15) in a positioning mode.
4. An injection mold steel warpage elimination apparatus as claimed in claim 3, wherein, the both ends of base (13) are respectively through integrative assembly connection between the supporting plate frame (12) and the apparatus housing (11), and the supporting plate frame (12) is connected with the side plate end of the bottom sealing plate (15) in a sliding insertion manner, and the bottom sealing plate (15) is used for sealing or unsealing the open bottom end of the apparatus housing (11).
5. An injection mold steel warping elimination apparatus according to claim 1, wherein the heat conduction mechanism comprises a plurality of silicon-molybdenum rods (8) and a ceramic base plate (3), the ceramic base plate (3) is positioned and installed on the heat insulation base (2), the plurality of silicon-molybdenum rods (8) are in contact with the ceramic base plate (3) for heat conduction, the plurality of silicon-molybdenum rods (8) are sequentially arranged in series in an electric conduction mode, and electrode connectors (9) installed on the quenching chamber shell (1) are used for being electrically connected with the silicon-molybdenum rods (8).
6. An injection mold steel warpage elimination apparatus as claimed in claim 1, wherein the inert gas input system includes a suction pump (22) with its outlet end connected to the air inlet hose (4) through a second short pipe (23), and the suction pump (22) with its inlet end connected to the second air extraction storage tank (25) through an air inlet pipe (24), and a first pipe valve (26) is installed on the air inlet pipe (24).
7. An injection mold steel warpage elimination apparatus as claimed in claim 6, wherein said intake pipe (24) is connected to one end of the return air hose (6) through a return pipe (28), the other end of the return air hose (6) is inserted and connected to the quenching chamber housing (1), and a second pipe valve (29) is installed on the return air hose (6).
8. An injection mould steel warpage elimination equipment according to claim 1, characterized in that, the vacuum pump system includes vacuum pump (16) inlet end through stub pipe (17) connection evacuation hose (5), vacuum pump (16) exit end through outlet duct (18) connection evacuation storage tank (19), and install vacuum valve (20) on outlet duct (18).
9. An injection mold steel warpage elimination apparatus as claimed in claim 1, wherein a temperature sensor (30) is inserted and installed on the top wall of the quenching chamber housing (1), and the temperature sensor (30) is a thermocouple temperature sensor.
10. The use method of the equipment for eliminating the warping of the steel of the injection mold according to any one of claims 1 to 9, comprising the following steps:
the method comprises the following steps: placing the die steel to be quenched on the ceramic base plate (3);
step two: the lower telescopic mechanism drives the bottom sealing plate (15) and the heat insulation seat (2) to move upwards, the upwards moving bottom sealing plate (15) is in sealing contact with the open bottom end of the equipment shell (11), the upper telescopic mechanism drives the quenching chamber shell (1) to move downwards, and the heat insulation seat (2) is in sealing contact with the open bottom end of the quenching chamber shell (1), so that a plurality of silicon-molybdenum rods (8) of the heat conduction mechanism are in contact with the ceramic base plate (3) for heat conduction;
step three: after a quenching chamber shell (1) and a heat insulation seat (2) enclose a sealed chamber, a vacuum valve (20) on an air outlet pipe (18) is opened, a vacuum pump (16) of a vacuum pumping system is started to work, air in the sealed chamber is conveniently pumped by a pumping hose (5), and the pumped air enters a pumping storage tank I (19);
step four: after the negative pressure vacuum pumping of the sealed cavity is finished, opening a pipe valve I (26) on an air inlet pipe (24), starting a pumping pump (26) of an inert gas input system to work, pumping the inert gas in a pumping storage tank II (25) from the air inlet pipe (24), and conveying the inert gas into the sealed cavity through an air inlet hose (4);
step five: after inert gas is input into the sealed cavity, the circuit is connected through the electrode joint (9), so that the silicon-molybdenum rods (8) are electrified and heated, the generated heat is transferred to the ceramic base plate (3), the temperature in the sealed cavity is raised to 1100 ℃ of the austenitizing temperature, and the uniform quenching heat treatment of the placed die steel is realized;
step six: after the uniform quenching heat treatment is finished, electrifying and heating a plurality of silicon-molybdenum rods (8) to 550 ℃, and carrying out heat preservation tempering treatment;
step seven: after the heat preservation tempering is finished, the plurality of silicon-molybdenum rods (8) are disconnected and electrified, and the circulating air cooling is carried out through the air inlet hose (4) and the air return hose (6), so that the cooling treatment of the die steel is realized;
step eight: after the cooling treatment, the bottom sealing plate (15) and the heat insulation seat (2) are conveniently driven by the lower telescopic mechanism, the die steel subjected to heat treatment is conveniently separated from the equipment shell (11), and the die steel of the next batch is conveniently taken out and replaced for quenching heat treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210450201.6A CN114807532A (en) | 2022-04-27 | 2022-04-27 | Method, structure and equipment for eliminating warping of steel of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210450201.6A CN114807532A (en) | 2022-04-27 | 2022-04-27 | Method, structure and equipment for eliminating warping of steel of injection mold |
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| CN114807532A true CN114807532A (en) | 2022-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210450201.6A Pending CN114807532A (en) | 2022-04-27 | 2022-04-27 | Method, structure and equipment for eliminating warping of steel of injection mold |
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| CN (1) | CN114807532A (en) |
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|---|---|---|---|---|
| JP2001108375A (en) * | 1999-10-07 | 2001-04-20 | Ulvac Japan Ltd | Apparatus for vacuum heat treatment |
| CN106929647A (en) * | 2017-04-25 | 2017-07-07 | 东莞市华兴隆模具钢材有限公司 | A kind of vacuum heat-treating method of mould steel |
| CN210796555U (en) * | 2019-11-04 | 2020-06-19 | 浙江鑫诚模具材料有限公司 | High-hardness die steel vacuum heat treatment device |
| CN112853059A (en) * | 2020-12-31 | 2021-05-28 | 湖北川冶科技有限公司 | Heat treatment device for die steel production and use method thereof |
| CN214361540U (en) * | 2021-02-07 | 2021-10-08 | 大连爱信金属制品有限公司 | Heat insulation protection device for reducing vacuum quenching deformation |
| US20220008991A1 (en) * | 2019-02-11 | 2022-01-13 | Desktop Metal, Inc. | Sealed furnace |
-
2022
- 2022-04-27 CN CN202210450201.6A patent/CN114807532A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001108375A (en) * | 1999-10-07 | 2001-04-20 | Ulvac Japan Ltd | Apparatus for vacuum heat treatment |
| CN106929647A (en) * | 2017-04-25 | 2017-07-07 | 东莞市华兴隆模具钢材有限公司 | A kind of vacuum heat-treating method of mould steel |
| US20220008991A1 (en) * | 2019-02-11 | 2022-01-13 | Desktop Metal, Inc. | Sealed furnace |
| CN210796555U (en) * | 2019-11-04 | 2020-06-19 | 浙江鑫诚模具材料有限公司 | High-hardness die steel vacuum heat treatment device |
| CN112853059A (en) * | 2020-12-31 | 2021-05-28 | 湖北川冶科技有限公司 | Heat treatment device for die steel production and use method thereof |
| CN214361540U (en) * | 2021-02-07 | 2021-10-08 | 大连爱信金属制品有限公司 | Heat insulation protection device for reducing vacuum quenching deformation |
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Application publication date: 20220729 |