Method for preparing magnesium alloy bone screw bar via room-temperature rotary forging under alternating magnetic field in conjunction with cryogenic processing and magnesium alloy bone screw product
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
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Jan 14, 2025
Grant Date -
Feb 22, 2024
app pub date -
Aug 16, 2023
filing date -
Aug 16, 2023
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present application relates to the technical field of material processing, and especially relates to a method for preparing a magnesium alloy bone screw bar via room-temperature rotary forging under alternating magnetic field in conjunction with cryogenic processing and a magnesium alloy bone screw product. The method specifically comprises the following steps: preparing an ingot, extruding the ingot into a magnesium-zinc-manganese alloy bar, performing room-temperature rotary forging under alternating magnetic field for plastic deformation, wherein the strength and hardness of the magnesium-zinc-manganese alloy are improved by the work hardening effect of magnesium alloy at room temperature, and meanwhile the microstructure is regulated; additionally, via the former and later cryogenic processing, the grain size and grain orientation uniformity can be effectively regulated in the magnesium alloy microstructure, and the magnesium alloy is effectively improved in plastic deformation ability, strength and corrosion resistance, and finally a magnesium alloy bone screw bar is obtained with excellent comprehensive properties in mechanical properties, corrosion resistance and biocompatibility, which can be mechanically processed into a magnesium alloy bone screw product.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
HUA RONG KE CHUANG BIOTECHNOLOGY (TIA JIN) CO LTD | B1-105 NO 80 HAIYUN STREET TIAN JIN ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE TIAN JIN 300453 |
International Classification(s)

- 2023 Application Filing Year
- B21J Class
- 58 Applications Filed
- 19 Patents Issued To-Date
- 32.76 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Liu, Lina | Tianjin, CN | 34 | 95 |
# of filed Patents : 34 Total Citations : 95 |
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Patent Citation Ranking
- 0 Citation Count
- B21J Class
- 0 % this patent is cited more than
- < 1 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Jul 14, 2028 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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Feb 21, 2023 | P | Publication | |
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Jun 24, 2021 | P | Published | |
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Dec 04, 2020 | F | Filing | |
Dec 04, 2020 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SURMELY, GERARD;IMBODEN, MATTHIAS;TOMBEZ, LIONEL;SIGNING DATES FROM 20200502 TO 20201202;REEL/FRAME:054545/0455 Owner name: THE SWATCH GROUP RESEARCH AND DEVELOPMENT LTD, SWITZERLAND |
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Dec 24, 2019 | PD | Priority Date |

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