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Forging method for CoCrMo tibial plateau artificial joint implant

A tibial platform and artificial joint technology, which is applied in the field of artificial joint forging processing, can solve the problems of poor dimensional accuracy, poor finish, and poor mechanical properties, and achieve the effects of avoiding friction loss, improving dimensional accuracy, and improving mechanical properties

Active Publication Date: 2019-10-25
无锡航亚科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a CoCrMo tibial plateau aiming at the existing conventional forging method that cannot produce a qualified CoCrMo tibial plateau, and the CoCrMo tibial plateau produced by the precision casting method has technical problems such as poor smoothness, poor mechanical properties, and poor dimensional accuracy. The forging method of platform artificial joint implants can realize the precision forging process of CoCrMo tibial platform artificial joint implants, and the product surface quality, mechanical properties and dimensional accuracy are all qualified, filling the gap that there is no forged CoCrMo tibial platform in China

Method used

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  • Forging method for CoCrMo tibial plateau artificial joint implant
  • Forging method for CoCrMo tibial plateau artificial joint implant
  • Forging method for CoCrMo tibial plateau artificial joint implant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] A kind of forging method of CoCrMo tibial platform artificial joint implant, it comprises the following steps:

[0069] Step 1, blanking, select φ33mm CoCrMo bar material, length 41mm, after blanking, the upper and lower end surfaces of the bar material 10 need to be flat to ensure that there are no obvious saw marks or knife marks on the end surface, and round the lower end of the bar material 10, and Its fillet radius R1 is 2mm;

[0070] Step 2, surface treatment, removing the knife marks and cutting fluid on the surface of the bar 10 through processes such as steel grit shot blasting and polishing;

[0071] Step 3, spraying, spraying anti-oxidation coating on the surface of the bar 10, the process is: heating the bar at 100°C for 90 minutes, taking it out and spraying the paint directly, the paint adopts the precision forging process with an effective protection temperature range of 1000°C~1180°C Use glass to protect the lubricant, and the thickness of the anti-oxid...

Embodiment 2

[0085] A kind of forging method of CoCrMo tibial platform artificial joint implant, it comprises the following steps:

[0086] Step 1, blanking, select φ33mm CoCrMo bar material, length 41mm, after blanking, the upper and lower end surfaces of the bar material 10 need to be flat to ensure that there are no obvious saw marks or knife marks on the end surface, and round the lower end of the bar material 10, and The fillet radius R1 is 3.5mm;

[0087] Step 2, surface treatment, removing the knife marks and cutting fluid on the surface of the bar 10 through processes such as steel grit shot blasting and polishing;

[0088] Step 3, spraying, spraying anti-oxidation coating on the surface of the bar 10, the process is: heating the bar at 150°C for 75 minutes, taking it out and spraying the paint directly, the paint adopts the precision forging process with an effective protection temperature range of 1000°C~1180°C Use glass to protect the lubricant, and the thickness of the anti-ox...

Embodiment 3

[0102] A kind of forging method of CoCrMo tibial platform artificial joint implant, it comprises the following steps:

[0103] Step 1, blanking, select φ33mm CoCrMo bar material, length 41mm, after blanking, the upper and lower end surfaces of the bar material 10 need to be flat to ensure that there are no obvious saw marks or knife marks on the end surface, and round the lower end of the bar material 10, and Its fillet radius R1 is 5mm;

[0104] Step 2, surface treatment, removing the knife marks and cutting fluid on the surface of the bar 10 through processes such as steel grit shot blasting and polishing;

[0105] Step 3, spraying, spraying anti-oxidation coating on the surface of the bar 10, the process is: heating the bar at 200°C for 60 minutes, taking it out and spraying the paint directly, the paint adopts the precision forging process with an effective protection temperature range of 1000°C~1180°C Use glass to protect the lubricant, and the thickness of the anti-oxid...

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Abstract

The invention provides a forging method for a CoCrMo tibial plateau artificial joint implant. The problem that CoCrMo tibial plateaus cannot be produced through existing conventional forging method, and CoCrMo tibial plateaus produced through precision casting methods are low in finish degree, poor in mechanical property and dimensional accuracy can be solved. The method comprises the steps of blanking, surface treatment, spray coating, primary extrusion, surface treatment, spray coating, secondary extrusion, surface treatment, spray coating, pre-forging, surface treatment and final forging.

Description

technical field [0001] The invention relates to the field of forging processing of artificial joints, in particular to a forging method of a CoCrMo tibial platform artificial joint implant. Background technique [0002] The tibial plateau artificial joint implant is a substitute for the damaged tibial plateau in the human knee joint. It can be implanted through surgery to restore joint function and improve the quality of life of patients. Due to the excellent properties of CoCrMo material such as wear resistance and high strength, it can effectively improve the service life of orthopedic implants, and its application prospects in orthopedic implants are broad. investment in the development of orthopedic implants. [0003] figure 1 It is a structural diagram of a tibial platform artificial joint implant, which includes a handle 1, a wing plate 2 and a platform 3, the platform is U-shaped, and the handle is located near the midpoint of the symmetrical centerline of the U-sha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00
CPCB21J5/002
Inventor 李建军李湘军董月
Owner 无锡航亚科技股份有限公司
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