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Molding method for casting and forging structure piece of wheelchair frame

A forming method and technology of structural parts, applied in the field of casting and forging processing, can solve the problems of heavy weight, low material utilization rate, cumbersome process, etc.

Active Publication Date: 2012-02-29
HARBIN HAFEI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wheelchair frame structural part is an important force-bearing structural part on the wheelchair. Foreign companies originally welded steel pipes, but the weight is heavy, and the shape is ordinary and not ornamental. The overall forging and heat treatment process of the structural parts developed in China The produced forgings have problems such as low material utilization rate and cumbersome process

Method used

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  • Molding method for casting and forging structure piece of wheelchair frame
  • Molding method for casting and forging structure piece of wheelchair frame
  • Molding method for casting and forging structure piece of wheelchair frame

Examples

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Effect test

Embodiment 1

[0032] Example 1: Combination Figure 1-Figure 6 , The present invention is a method for casting and forging a wheelchair frame structure. The steps are as follows:

[0033] Step 1: Cutting: Saw the outer circle φ200mm aluminum ingot with the material grade of 6061 into 800mm long blanks;

[0034] Step 2: Melting: place the billet in a crucible and heat it at a constant temperature of 650°C to melt;

[0035] Step 3: Molding: Apply release agent on the surface of the riser and cavity of the casting mold, close the casting mold, and tighten the fixing clip;

[0036] Step 4: Pouring: Use a crucible to take 4.5 kg of liquid aluminum after the billet is melted, and pour from the pouring port to the cavity until the cavity is completely filled;

[0037] Step 5: Molding: Open the fixing clip, open the casting mold, and take out the molding blank;

[0038] Step 6: Cut the riser: Use a toothless saw to cut the riser to obtain the cast billet;

[0039] Step 7: Clean up defects: clean up and trim t...

Embodiment 2

[0052] Example 2: Combination Figure 1-Figure 6 , The present invention is a method for casting and forging a wheelchair frame structure. The steps are as follows:

[0053] Step 1: Cutting: Saw the outer circle φ200mm ingot with the material grade of 6061 into a billet of 800mm length;

[0054] Step 2: Melting: Place the billet in a crucible and heat it at a constant temperature: 650°C, and heat it to completely melt;

[0055] Step 3: Molding: in the casting mold ( Image 6 ) Apply release agent to the surface of riser and cavity, close the casting mold and tighten the fixing clip;

[0056] Step 4: Pouring: Use a crucible to hold 4.5 kg of liquid aluminum after the billet is melted from the pouring port 1 ( Image 6 1) Pouring until the cavity is completely filled, and then pouring from the riser 2, 3 to the riser cavity is filled with liquid aluminum;

[0057] Step 5: Molding: Open the fixing clamp, slowly separate the upper and lower molds of the casting mold, and take out the moldi...

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Abstract

The invention provides a molding method for casting and forging a structure piece of a wheelchair frame, which comprises the steps of: sawing and cutting an aluminum cast ingot with the outer circle of phi 200mm with a material trade mark of 6061 into blank with the length of 800mm; smelting; pouring; modeling; cutting a dead head; charging a casting blank, heating and fixing the temperature at 530 DEG C; forging and pressing the casting blank by a 5000-ton oil press and a forging mould; forging and pressing to obtain a forged piece; etching and washing; treating with solid solution; and manually correcting the specific deformation degree of the forged piece. The precast blank is cast and molded by the method, the shape of the blank is good in consistency, the shape of a curved surface iseasy to control, a casting material can be cyclically utilized, and the material utilization can be furthest improved; and the batch production practice proves that the finished forged piece producedby a casting and forging technological process has no forging defects, the thermal treatment performance meets the demand, and the final status of the forged piece completely accords with user demand.

Description

(1) Technical field [0001] The invention relates to a casting and forging processing technology, in particular to a method for casting and forging a wheelchair frame structure. (2) Background technology [0002] Forgings are widely used in important structural parts of various equipment due to their superior mechanical properties. Among them, aluminum alloy forgings have become the most used type of forgings in non-ferrous metal forgings due to their light weight and good corrosion resistance. Automobiles, aerospace, locomotives, shipbuilding and other fields have a very wide range of applications, and its output is second only to ferrous metal forgings. Wheelchair frame structural parts are an important structural part for wheelchairs. Foreign companies originally used steel pipe welding, but the weight is relatively heavy and the appearance is ordinary and not ornamental. The domestic research and development of the overall forging process and heat treatment process of the stru...

Claims

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Application Information

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IPC IPC(8): B23P15/00B21J5/02
Inventor 曲荣生孙永恒刘玉新林超刘放顺崔春阳王艺张作家赵文举
Owner HARBIN HAFEI IND
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