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Titanium alloy forging process

A titanium alloy and process technology, applied in the direction of metal processing equipment, etc., can solve the problems of unguaranteed product quality, immature process, serious cracks, etc., and achieve the effect of reducing the amount of tool waste

Active Publication Date: 2012-11-07
HEBEI BOTOU SAFETY TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially for tools with grooves, the cracks in the grooves are very serious, and they cannot be removed through later processing. The product quality cannot be guaranteed, and the process is immature and imperfect, so it cannot be mass-produced.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The specific steps of this embodiment are as follows:

[0015] (1) Remove the oil stain on the surface of the titanium alloy workpiece, preheat it at 60°C for 30 minutes, and apply 0.05mm thick glass protective lubricant for titanium alloy forging process on the surface;

[0016] (2) (2) Put the workpiece coated with protective agent into the electric furnace, raise the temperature of the electric furnace to 920°C, and keep it warm for 30 minutes;

[0017] (3) Free forging is carried out within 10 seconds after the workpiece is taken out of the electric furnace. Before free forging, the hammer head is preheated to 350°C. When forging, ensure that the forging rules are square and there are no hammer snags and corners;

[0018] (4) The titanium alloy bar is molded once after free forging, and the other shapes of the workpiece are naturally cooled after free forging, sandblasting to remove the protective agent on the surface, grinding to remove all surface cracks, brushing...

Embodiment 2

[0020] A titanium alloy forging process, the specific steps are as follows:

[0021] (1) Remove the oil stain on the surface of the titanium alloy workpiece, preheat it at 80°C for 25 minutes, and apply 0.1mm thick glass protective lubricant for titanium alloy forging process on the surface;

[0022] (2) Put the workpiece coated with protective agent into the electric furnace, raise the temperature of the electric furnace to 1100°C, and keep it warm for 25 minutes;

[0023] (3) Free forging is carried out within 15 seconds after the workpiece is taken out of the electric furnace. Before free forging, the hammer head is preheated to 380°C. When forging, ensure that the forging rules are square and there are no hammer snags and corners;

[0024] (4) The titanium alloy bar is molded once after free forging, and the other shapes of the workpiece are naturally cooled after free forging, sandblasting to remove the protective agent on the surface, grinding to remove all surface crack...

Embodiment 3

[0026] A titanium alloy forging process, the specific steps are as follows:

[0027] (1) Remove the oil stain on the surface of the titanium alloy workpiece, preheat it at 100°C for 20 minutes, and apply a 0.2mm thick glass protective lubricant for titanium alloy forging process on the surface

[0028] (2) Put the workpiece coated with protective agent into the electric furnace, raise the temperature of the electric furnace to 1150°C, and keep it warm for 20 minutes;

[0029] (3) Free forging is carried out within 30 seconds after the workpiece is taken out of the electric furnace. Before free forging, the hammer head is preheated to 400°C. When forging, ensure that the forging rules are square and there are no hammer snags and corners;

[0030] (4) The titanium alloy bar is molded once after free forging, and the other shapes of the workpiece are naturally cooled after free forging, sandblasting to remove the protective agent on the surface, grinding to remove all surface cra...

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Abstract

The invention relates to a titanium alloy forging process which comprises the following steps: (1) removing the oil on the surface of a titanium alloy workpiece, preheating for 20-30 minutes at 60-100 DEG C, and painting with a protective agent; (2) putting the workpiece painted with the protective agent into an electric furnace, heating the electric furnace heated to 920-1,150 DEG C, and preserving the heat for 20-30 minutes; (3) taking the workpiece out of the electric furnace, preheating a hammer to 350-400 DEG C, and carrying out free forging to the workpiece after the workpiece is taken out of the electric furnace for 10-30 minutes; and (4) carrying out free forging to titanium alloy rods, compressing and moulding for one time, carrying out free forging to workpieces in other shapes, cooling naturally, spraying sand to remove the protective agent on the surface, polishing to remove all crackles on the surface, painting with the protective agent, drying, repeating the step (2) and the step (3), and compressing and moulding. Compared with the traditional process, the titanium alloy forging process has the advantage that the waste produced tool is reduced by 80%.

Description

technical field [0001] The invention relates to a titanium alloy forging process. Background technique [0002] The traditional forging process of titanium alloy is operated according to the forging process of steel tools. The cooling speed of the titanium alloy billet is extremely fast, and the degree of deformation is relatively large. The contact between the billet and the tool causes the surface layer of the metal billet to be chilled. There is no time to conduct heat to the surroundings, and a large temperature gradient is formed from the surface to the center. As a result, the metal forms a strongly flowing strain zone. The greater the degree of deformation, the more obvious the shear band, and finally the cracks are formed under the action of tensile stress with opposite sign. Especially for tools with grooves, the cracks in the grooves are very serious, and they cannot be removed through post-processing. The product quality cannot be guaranteed, and the process is n...

Claims

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Application Information

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IPC IPC(8): B21J5/06B21J1/06B21J3/00
Inventor 杨景华
Owner HEBEI BOTOU SAFETY TOOLS CO LTD
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