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Titanium alloy orthodontic forceps and preparation method thereof

A titanium alloy and orthodontic technology, applied in the field of titanium alloy orthodontic pliers and its preparation, can solve the problems of poor welding performance, easy peeling off of PVD coating, poor corrosion resistance of the base material of the pliers beak, etc., to ensure fluidity and maintenance Formability, less EDM discharge machining amount, and high raw material utilization

Inactive Publication Date: 2021-05-25
上海精科智能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tungsten carbide jaws have high hardness, but poor welding performance, easy to fall off; poor corrosion resistance, easy to blacken; poor toughness, easy to chip
Laser cladding martensitic stainless steel, the material of the jaws is the same as the material of the jaw body, the corrosion resistance is poor, the life of the jaws is short, and it is easy to corrode during use, and the cutting edge at the beak will shorten rapidly after corrosion, which affects the use
[0003] CN201911149573.X adopts the method of adding PVD coating to improve the surface of the cutting edge of the pliers beak, but it cannot fundamentally solve the problem that the base material of the pliers beak has poor corrosion resistance and the PVD coating is easy to fall off during use

Method used

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  • Titanium alloy orthodontic forceps and preparation method thereof
  • Titanium alloy orthodontic forceps and preparation method thereof
  • Titanium alloy orthodontic forceps and preparation method thereof

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Embodiment 1

[0027] The selected titanium alloy material composition of titanium alloy orthodontic pliers in the present invention is: titanium (surplus), aluminum (3%), vanadium (8%), molybdenum (4%), zirconium (4%), niobium (1%) %), nickel (2%), chromium (6%). Use -200 mesh gas atomized spherical titanium alloy master alloy powder, the composition is titanium (balance), aluminum (9%), vanadium (24%), molybdenum (12%), zirconium (12%), niobium (3%) ), nickel (6%), chromium (18%); another -400 mesh hydrogenated dehydrogenation pure titanium powder is selected; the two are mixed uniformly by double cone mixer at a weight ratio of 1:2; the powder obtained by mixing is mixed with viscous Kneading agent is mixed and made feed, and binder composition is by weight 32% of paraffin wax, palm wax 8%, polyethylene wax 15%, polyethylene 22%, polypropylene 15%, EVA6%, stearic acid 2% , The weight ratio of powder and binder is 92.1%: 7.9%. The feeding material is shaped by an injection molding machin...

Embodiment 2

[0029] The selected titanium alloy material composition is: titanium (balance), aluminum (5%), vanadium (5%), molybdenum (5%), niobium (2%), nickel (1%), chromium (3%) . Use -200 mesh gas atomized spherical titanium alloy master alloy powder, the composition is titanium (balance), aluminum (15%), vanadium (15%), molybdenum (15%), niobium (6%), nickel (3%) ), chromium (9%); another -400 mesh hydrogenation dehydrogenation pure titanium powder is selected; the two are mixed in a double-cone mixer at a weight ratio of 1:2; the powder obtained by mixing is mixed with a binder to make Feed, the binder composition is by weight 40% paraffin wax, palm wax 10%, polyethylene wax 5%, polyethylene 10%, polypropylene 25%, EVA8%, stearic acid 2%, powder and binder The weight ratio is 92.3%:7.7%. The feeding material is formed at a temperature of 160°C by an injection molding machine and a mold designed for the required orthodontic jaws. After forming, it enters a sintering furnace and is s...

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Abstract

The invention discloses titanium alloy orthodontic forceps and a preparation method thereof. A titanium alloy material of the titanium alloy orthodontic forceps comprises the following elements in percentage by weight: the balance of titanium, 1-8% of aluminum, 4-12% of vanadium, 1-8% of molybdenum, 1-8% of zirconium, 1-8% of niobium, 2-4% of nickel and 1-8% of chromium. The invention aims to provide the titanium alloy orthodontic forceps which are light in weight, good in holding feeling, good in corrosion resistance, high in strength and long in service life of a forceps opening, and the preparation method of the titanium alloy orthodontic forceps. The titanium alloy material is selected, a forcepsbody in a final shape is directly prepared through metal powder injection molding, a forceps opening capable of achieving specific functions is machined through a machining and EDM post-machining method, and the hardness of the forceps opening is improved through a proper nitriding treatment process. The preparation method can greatly reduce the consumption of raw materials and the processing cost, and is high in production efficiency, excellent in appearance quality, high in economic feasibility and high in additional value. The relative density of a final product material is greater than 97%, the hardness of the forceps opening is higher than 700HV1, the service life of the forceps opening is longer than 50000 times, and the use performance is greatly superior to that of similar market products.

Description

technical field [0001] The invention relates to the field of powder metallurgy metal injection molding, in particular to a titanium alloy orthodontic forceps and a preparation method thereof. Background technique [0002] Orthodontic forceps are instruments used for orthodontic operations in orthodontics. They have various functions, and are mostly used for cutting or clamping and pulling operations on orthodontic archwires. Orthodontic pliers generally consist of two parts: a pliers body and a pliers beak. The pliers body is designed according to the principle of leverage and is held by hand during operation; the pliers beak is provided with a cutting edge for cutting or clamping orthodontic archwires. At present, the main material used to prepare the body of orthodontic forceps is martensitic stainless steel. Martensitic stainless steel has high strength and high hardness, and can withstand a large holding force to operate metal orthodontic archwires. Corrosion resistance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C7/04C22C14/00C22C1/04B22F3/22B22F3/24B22F3/10B22F1/00B22F5/00
CPCA61C7/04C22C14/00C22C1/0458B22F3/225B22F3/1021B22F3/1007B22F3/24B22F5/00B22F2201/20B22F2003/247B22F2005/002B22F2998/10B22F2998/00B22F1/10B22F1/103
Inventor 张怀龙
Owner 上海精科智能科技股份有限公司
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