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Room-temperature composite soft sheathing method for high-temperature alloy forge piece hot die forging and forging method of high-temperature alloy forge piece

A high-temperature alloy and deformed high-temperature alloy technology, which is applied in the driving device of forging presses, vehicle parts, transportation and packaging, etc., can solve problems such as poor safety and operability, unfavorable forging process consistency control, and different actual temperatures. Achieve the effect of saving machining cost, improving quality and reducing cost

Pending Publication Date: 2020-04-28
CENT IRON & STEEL RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: 1) the billet needs to be heated to above 1000°C before it is sheathed, which requires workers to operate at high temperature, and the safety and operability are poor; 2) when there are many forging billets, the sheathing time is longer and frequent switching The temperature drop caused by the furnace door makes the actual temperature of each blank after sheathing is different, which is not conducive to the control of the consistency of the forging process

Method used

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  • Room-temperature composite soft sheathing method for high-temperature alloy forge piece hot die forging and forging method of high-temperature alloy forge piece
  • Room-temperature composite soft sheathing method for high-temperature alloy forge piece hot die forging and forging method of high-temperature alloy forge piece
  • Room-temperature composite soft sheathing method for high-temperature alloy forge piece hot die forging and forging method of high-temperature alloy forge piece

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] In this embodiment, a room temperature composite soft sheath for hot die forging of superalloy forgings is provided, which includes a blank 1, a cladding 2, a high-temperature binder 3 and a glass fiber cloth 4; the cladding 2 The surface of the blank 1 is covered by the high-temperature adhesive 3, and the glass fiber cloth 4 is tightly wrapped on the covering 2, and the covering 2 is an aluminum silicate fiber blanket or a silicic acid blanket. Aluminum felt. Among them, the blank 1 is a cylindrical blank in one-fire forming; the cladding 2 is an aluminum silicate felt with a thickness of 4mm; the high-temperature binder 3 is a glass binder with a thickness of 5mm; the thickness of the glass fiber cloth 4 is 1mm.

[0087] Multiple blanks 1 are wrapped and heated in the furnace at the same time. There is no frequent opening and closing of the furnace door in the middle, and the heating consistency of blanks 1 is good.

Embodiment 2

[0089] In this embodiment, a room temperature composite soft sheath for hot die forging of superalloy forgings is provided, which includes a blank 1, a cladding 2, a high-temperature binder 3 and a glass fiber cloth 4; the cladding 2 The surface of the blank 1 is covered by the high-temperature adhesive 3, and the glass fiber cloth 4 is tightly wrapped on the covering 2, and the covering 2 is an aluminum silicate fiber blanket or a silicic acid blanket. Aluminum felt. Among them, the blank 1 is the cake blank of the second fire in the two-fire molding; the covering 2 is an aluminum silicate fiber blanket with a thickness of 24mm; the high-temperature binder 3 is a glass binder with a thickness of 7mm; the glass fiber cloth 4 has a thickness of 1.5 mm.

[0090] Multiple blanks 1 are wrapped and heated in the furnace at the same time. There is no frequent opening and closing of the furnace door in the middle, and the heating consistency of blanks 1 is good.

Embodiment 3

[0092]In this embodiment, a room temperature composite soft sheath for hot die forging of superalloy forgings is provided, which includes a blank 1, a cladding 2, a high-temperature binder 3 and a glass fiber cloth 4; the cladding 2 The surface of the blank 1 is covered by the high-temperature adhesive 3, and the glass fiber cloth 4 is tightly wrapped on the covering 2, and the covering 2 is an aluminum silicate fiber blanket or a silicic acid blanket. Aluminum felt. Among them, the blank 1 is the blank of the turbine disk forging; the cladding 2 is an aluminum silicate fiber blanket with a thickness of 18mm; the high-temperature binder 3 is a glass binder with a thickness of 10mm; the thickness of the glass fiber cloth 4 is 0.7 mm.

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Abstract

The invention relates to a room-temperature composite soft sheathing method for high-temperature alloy forge piece hot die forging and a forging method of a high-temperature alloy forge piece. The sheathing method comprises the following steps that the surface of a blank is cleaned; a coating matched with the blank in shape and size is cut; one surface of the coating is coated with a high-temperature binder; the surface of the blank is covered with the surface, coated with the high-temperature binder, of the coating, and glass fiber cloth is used for winding to obtain the sheathed blank; and the coating is an aluminum silicate fiber blanket or an aluminum silicate felt. According to the room-temperature composite soft sheathing method for the high-temperature alloy forge piece hot die forging, after repeated tests of the inventor, it is found that the glass fiber cloth can replace a previous stainless steel sleeve and / or a metal fixing strip, so that the whole sheathing and forging process is more convenient in operation, the cost is lower, and the product quality and the machining efficiency are improved.

Description

technical field [0001] The invention relates to a metal material processing technology, in particular to a room temperature composite soft sheathing method and a forging method for hot die forging of high-temperature alloy forgings. Background technique [0002] Difficult-to-deform superalloys have the characteristics of high alloying and high strengthening phase content. In the die forging process of turbine disc forgings, there are high hot working temperatures (generally 1000-1200 ° C), narrow deformation window temperature range, poor thermoplasticity, and easy deformation. Cracking, complete recrystallization is difficult, deformation resistance and other prominent problems, and it is sensitive to temperature drop. When the deformation temperature is lower than the optimum thermal processing range of the alloy (generally not exceeding 100°C), on the one hand, the thermal processing performance of the alloy deteriorates, resulting in easy cracking on the surface of the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/02B21J9/20B21K1/32B21J1/00
CPCB21J5/02B21J9/20B21K1/32B21J1/003
Inventor 杜金辉唐超毕中南邓群曲敬龙荣义吕旭东王民庆安腾吴玉博孟令胜史玉亭谷雨刘辉杨成斌
Owner CENT IRON & STEEL RES INST
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