CN211840019U - Heat preservation device of steel ingot or steel billet in high-temperature alloy forging process - Google Patents

Heat preservation device of steel ingot or steel billet in high-temperature alloy forging process Download PDF

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CN211840019U
CN211840019U CN201922422514.7U CN201922422514U CN211840019U CN 211840019 U CN211840019 U CN 211840019U CN 201922422514 U CN201922422514 U CN 201922422514U CN 211840019 U CN211840019 U CN 211840019U
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heat
steel
steel ingot
preservation
base
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王资兴
沈海军
陈国胜
王建伟
张思允
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Jiangsu Jicui Advanced Metal Material Institute Co ltd
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Jiangsu Jicui Advanced Metal Material Institute Co ltd
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Abstract

The utility model provides a heat preservation device for steel ingots or steel billets in the high-temperature alloy forging process, which comprises a right arm, a left arm, a base, a heat preservation and insulation blanket and the steel ingots; the right arm and the left arm are fixed on the base and are composed of a plurality of joints, and each joint can rotate inwards at an angle of 0-180 degrees; the base is provided with a groove for supporting the heat-preservation and heat-insulation blanket and enabling the steel ingot to be fixed on the base, and the glass adhesive is adhered to the supporting heat-preservation and heat-insulation blanket so that the heat-preservation and heat-insulation blanket can be adhered to the steel ingot. The utility model discloses an automatic canning device and self-adhesion heat preservation adiabatic blanket realize the steel ingot and at the quick automatic canning after the heating, effectively reduce calorific loss, satisfy the fine grain and the superfine brilliant requirement of organizing of rod, improve operating personnel operational environment by a wide margin.

Description

Heat preservation device of steel ingot or steel billet in high-temperature alloy forging process
Technical Field
The utility model belongs to the special material forges the field, concretely relates to heat preservation device of high temperature alloy forging process steel ingot or steel billet.
Background
The deformed high-temperature alloy is mainly used as a key hot end part in important fields of aerospace, nuclear power energy, petrochemical industry and the like. With the rapid development of the technology, the requirements of the fields on the mechanical property, the microstructure and the like of the high-temperature alloy are higher and higher, and the requirements on the forging process are also improved. Due to the requirement of structural properties, such as fine-grained or ultra-fine-grained structures, or for some high-alloying refractory alloys which are difficult to deform, the temperature control window of the key forging process is very small, namely the forging temperature range is small, and the temperature control is one of the key points of the forging process. In the actual production process, in order to control the forging temperature, the heating temperature of the forge piece is selected as the upper limit of the allowable deformation temperature range, and meanwhile, the blank is wrapped by the sheath to slow down the heat loss in the transfer process and the hot working process, so that a better deformation structure is obtained.
The covering and wrapping is to cover the surface of the steel ingot or billet with a heat insulating material such as an aluminum silicate fiber blanket to reduce heat loss caused by radiation and convection of the steel ingot or billet, prevent contact heat transfer between the mold and the steel ingot or billet, and block heat transfer between the steel ingot or billet and air. Fixing the heat insulating material on the surface of the steel ingot or the billet by adopting a method of welding a stainless steel outer sleeve, and calling the heat insulating material as a hard sheath; the heat insulating material is fixed on the surface of the steel ingot or the billet by adopting an adhering mode, and the flexible sheath is called.
At present, the blank is directly coated by manpower, the labor intensity of workers is high, the working environment is severe, and the coating quality fluctuation is large.
The heat preservation method adopted in patent 201610272023.7, a method for reducing the forging cracking tendency of high-temperature alloy materials, is to heat a steel ingot or a steel billet after the steel ingot or the steel billet is wrapped. The method of heating by covering first and then heating in the furnace can lead to long heating time and large energy consumption, and the heating time of the steel ingot or the steel billet covered with the same mass is more than 2 times of the heating time of the steel ingot or the steel billet not covered with the same mass.
The heat preservation method adopted in patent 201510269497.1, a forging method of 500 kg-grade GH3230 high-temperature alloy, is to coat a layer (by using a spray gun or manually brushing) on a steel ingot or a steel billet and then attach a heat preservation and heat insulation material on the surface of the steel ingot or the steel billet. The method is inconvenient to operate in a high-temperature environment, has potential safety hazards, is uneven in artificial coating, and is easy to fall off wrapping materials.
Patent 201310359168.7 entitled "sheathing method for ultra-large nickel-based superalloy turbine disk" adopts a method of soft sheathing and then hard sheathing, that is, a superalloy blank is wrapped and compacted by heat insulation cotton, and then is wrapped and fixed by a stainless steel band. Although this method is complex, it can meet the requirement of forging heat-insulating for disk-shaped parts, but it is not suitable for cylindrical steel ingot or billet.
In summary, the traditional sheathing method has high labor intensity and severe working environment, and can cause the problems of overlong heating time of the high-temperature alloy blank in the furnace, high energy consumption, easy falling of the soft sheath, easy damage of the clamping and the like.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a heat preservation device for steel ingots or steel billets in the high-temperature alloy forging process, which comprises a right arm, a left arm, a base, a heat preservation and heat insulation blanket and steel ingots; the right arm and the left arm are fixed on the base and are composed of a plurality of joints, and each joint can rotate inwards at an angle of 0-180 degrees; the base is provided with a groove for supporting the heat-preservation and heat-insulation blanket and enabling the steel ingot to be fixed on the base, and the glass adhesive is adhered to the supporting heat-preservation and heat-insulation blanket so that the heat-preservation and heat-insulation blanket can be adhered to the steel ingot.
Furthermore, the number of joints of the right arm and the left arm is 2-6.
Furthermore, the number of joints of the right arm and the left arm is preferably 3, and the joints are symmetrically arranged.
Further, each joint of the right arm and the left arm is driven by an air cylinder or a hydraulic cylinder independently.
Further, the groove on the base is preferably V-shaped.
The utility model discloses an automatic canning device and self-adhesion heat preservation adiabatic blanket realize that the steel ingot is quick automatic canning after the heating, effectively reduce calorific loss, reduce the difficult deformation alloy and forge the fracture risk, can realize forging in the narrow temperature interval, obtain fine grain or superfine brilliant tissue, improve operating personnel operational environment simultaneously by a wide margin.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the injection glass adhesive of the heat-insulating blanket of the present invention.
In the figure: 1-right arm; 2-left arm; 3, a base; 4-heat preservation and insulation blanket; and 5, steel ingot.
Note: the two-dot chain line on the way is the equipment unfolding state.
Detailed Description
Referring to fig. 1, a heat preservation device for steel ingots or steel billets in a high-temperature alloy forging process comprises a right arm 1, a left arm 2, a base 3, a heat preservation and insulation blanket 4 and steel ingots 5; the right arm 1 and the left arm 2 are fixed on the base 3 and are composed of a plurality of joints, each joint is made of high-temperature-resistant materials, so that the use requirements of the joints in a high-temperature environment are met, and each joint can rotate inwards at an angle of 0-180 degrees; the groove on the base 3 is preferably a V-shaped groove and is used for supporting the heat-preservation and heat-insulation blanket 4 and enabling the steel ingot 5 to be fixed on the base 3, and the glass adhesive is adhered on the supporting heat-preservation and heat-insulation blanket 4 so that the heat-preservation and heat-insulation blanket 4 can be adhered on the steel ingot 5. In fig. 1, the number of joints of the right arm 1 and the left arm 2 is preferably 3, and the joints are symmetrically arranged. Each joint of the right arm 1 and the left arm 2 is driven by an air cylinder or a hydraulic cylinder independently.
EXAMPLE 1 superalloy GH5188 round bar forging
1. Placing a GH5188 steel ingot with the diameter of 508mm into a high-temperature electric furnace to heat to 1170 ℃, and preserving heat for 3 hours;
2. unfolding the right arm 1 and the left arm 2 of the heat preservation device, and spreading the heat preservation and heat insulation blanket 4 adhered with the glass adhesive on the right arm 1 and the left arm 2, wherein the surface with the glass adhesive faces upwards; the glass adhesive is adhered to the heat-insulating blanket 4 by a special injector, and referring to figure 2, black spots are the glass adhesive;
3. after heating, the steel ingot 5 is moved out of the heating furnace and is hoisted to a V-shaped groove on the heat preservation device;
4. the right arm 1 of the heat preservation device is lifted up firstly to wrap the heat preservation and heat insulation blanket 4 on the right side on the steel ingot 5, the heat preservation and heat insulation blanket 4 is adhered to the surface of the steel ingot 5 under the action of the glass adhesive, and the right arm 1 falls down and returns to the original position;
5. the left arm 2 of the heat preservation device is lifted up, the left heat preservation and heat insulation blanket 4 is wrapped on the steel ingot 5, the heat preservation and heat insulation blanket 4 is adhered to the surface of the steel ingot 5 under the action of the glass adhesive, and the left arm 2 falls down and returns to the original position;
6. the steel ingot 5 is lifted off, clamped by an operating machine, and forged by a rapid forging machine.
EXAMPLE 2 Fine grained Bar forging of superalloy GH4169
1. Placing GH4169 steel billets with the diameter of 360mm into a high-temperature electric furnace, heating to 1000-1020 ℃, and preserving heat for 2.5 hours;
2. unfolding the right arm 1 and the left arm 2 of the heat preservation device, and spreading the heat preservation and heat insulation blanket 4 adhered with the glass adhesive on the right arm 1 and the left arm 2, wherein the surface with the glass adhesive faces upwards; the glass adhesive is adhered to the heat-insulating blanket 4 by a special injector, and referring to figure 2, black spots are the glass adhesive;
3. after heating, the steel ingot 5 is moved out of the heating furnace and is hoisted to a V-shaped groove on the heat preservation device;
4. the right arm 1 of the heat preservation device is lifted up firstly to wrap the heat preservation and heat insulation blanket 4 on the right side on the steel ingot 5, the heat preservation and heat insulation blanket 4 is adhered to the surface of the steel ingot 5 under the action of the glass adhesive, and the right arm 1 falls down and returns to the original position;
5. the left arm 2 of the heat preservation device is lifted up, the left heat preservation and heat insulation blanket 4 is wrapped on the steel ingot 5, the heat preservation and heat insulation blanket 4 is adhered to the surface of the steel ingot 5 under the action of the glass adhesive, and the left arm 2 falls down and returns to the original position;
6. and (3) lifting off the steel billet, clamping the steel billet by using an operating machine, and forging the steel billet by using a rapid forging machine, wherein the forging deformation is 40-60%. By the process, the 6-8 grade fine-grained GH4169 bar can be obtained.

Claims (5)

1. A heat preservation device of steel ingot or steel billet in the high-temperature alloy forging process is characterized in that: comprises a right arm (1), a left arm (2), a base (3), a heat-insulating blanket (4) and a steel ingot (5); the right arm (1) and the left arm (2) are fixed on the base (3) and are composed of a plurality of joints, and each joint can rotate inwards at an angle of 0-180 degrees; the base (3) is provided with a groove for supporting the heat-preservation and heat-insulation blanket (4) and enabling the steel ingot (5) to be fixed on the base (3), and the glass adhesive is adhered to the supporting heat-preservation and heat-insulation blanket (4) so that the heat-preservation and heat-insulation blanket (4) can be adhered to the steel ingot (5).
2. The heat-insulating device for the steel ingot or the steel billet in the high-temperature alloy forging process according to claim 1, which is characterized in that: the number of joints of the right arm (1) and the left arm (2) is 2-6.
3. The heat-insulating device for the steel ingot or the steel billet in the high-temperature alloy forging process according to claim 2, characterized in that: the number of joints of the right arm (1) and the left arm (2) is 3, and the joints are symmetrically arranged.
4. A device for keeping warm of ingots or billets in a superalloy forging process according to any of claims 1 to 3, characterized in that: each joint of the right arm (1) and the left arm (2) is driven by a cylinder or a hydraulic cylinder independently.
5. The heat-insulating device for the steel ingot or the steel billet in the high-temperature alloy forging process according to claim 1, which is characterized in that: the groove on the base (3) is V-shaped.
CN201922422514.7U 2019-12-30 2019-12-30 Heat preservation device of steel ingot or steel billet in high-temperature alloy forging process Active CN211840019U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110947899A (en) * 2019-12-30 2020-04-03 江苏集萃先进金属材料研究所有限公司 Heat preservation device and method for steel ingot or steel billet in high-temperature alloy forging process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110947899A (en) * 2019-12-30 2020-04-03 江苏集萃先进金属材料研究所有限公司 Heat preservation device and method for steel ingot or steel billet in high-temperature alloy forging process
CN110947899B (en) * 2019-12-30 2024-10-25 江苏集萃先进金属材料研究所有限公司 Heat preservation device and method for steel ingot or steel billet in high-temperature alloy forging process

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