Title:
ELASTIC ROD AND PRODUCTION METHOD THEREFOR AND MATTRESS WITH ELASTIC ROD
Document Type and Number:
WIPO Patent Application WO/2022/205926
Kind Code:
A1
Abstract:
Provided are an elastic rod and a production method therefor and a mattress with the elastic rod. The elastic rod is made of spring steel, stainless steel, aviation aluminum or an aluminum alloy and is provided with a relatively hard core part and a relatively soft outer part wrapping the core part, the Rockwell hardness (HRC) difference between the core part and the outer part is 0.1 □ to 2.5 □, and the grain size of the core part is larger than that of the outer part. The elastic rod is obtained by means of an ultrahigh-frequency induction heating treatment, a high-frequency induction heating treatment, oil quenching and medium-frequency induction heating treatment tempering, and has an excellent hardness and yield strength, no deformation, is resistant to fatigue, is uniform in quality, and has a high yield and safe performance.
Inventors:
WANG SIQI (CN)
Application Number:
PCT/CN2021/129998
Publication Date:
October 06, 2022
Filing Date:
November 11, 2021
Export Citation:
Assignee:
WANG SIQI (CN)
International Classes:
A47C17/86; C21D1/10; A47C27/00; A63B5/11; C21D1/667; C21D6/00; C21D9/00; C22C38/02; C22C38/04; C22C38/24; C22F1/04
Foreign References:
| CN113106204A | 2021-07-13 | |||
| CN101983247A | 2011-03-02 | |||
| CN109481889A | 2019-03-19 | |||
| CN105960266A | 2016-09-21 | |||
| AU2019101532A4 | 2020-08-06 | |||
| DE202014102931U1 | 2014-07-03 |
Attorney, Agent or Firm:
DONGGUAN KEKAIWEICHENG INTELLECTUAL PROPERTY CO. LTD. (CN)
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