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Production process of high-strength rivet nuts

A production process and rivet nut technology, applied in the direction of nuts, threaded fasteners, connecting components, etc., can solve the problem that the strength of rivet nuts cannot be improved, and achieve the effect of improving hardness, eliminating stress and softening

Pending Publication Date: 2021-10-01
浙江坤厚汽车零部件股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the strength of rivet nuts cannot be improved by proposing a production process for high-strength rivet nuts in view of the above-mentioned problems in the existing technology

Method used

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Embodiment Construction

[0024] The following are specific examples of the present invention to further describe the technical solutions of the present invention, but the present invention is not limited to these examples.

[0025] A production process for high-strength rivet nuts, comprising the following steps:

[0026] 1) Raw material spheroidizing annealing: select raw materials to perform spheroidizing annealing on raw materials;

[0027] 2) Upsetting and forming: After spheroidizing and annealing, the raw material is formed into a blank by cold heading;

[0028] 3), degreasing;

[0029] 4) Partial annealing: perform partial annealing on the designated position of the blank after degreasing;

[0030] 5), pickling: Pickling the blank after partial annealing by pickling solution;

[0031] 6) Tapping: Tapping and tapping the inside of the blank by a parts machine to form a rivet nut;

[0032] 7), surface treatment: to treat the surface of the rivet nut;

[0033] 8) Screening: test the rivet nut...

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Abstract

The invention provides a production process of high-strength rivet nuts, belongs to the technical field of rivet nut machining, and solves the technical problem that the strength of existing rivet nuts cannot be improved. The production process of the high-strength rivet nuts comprises the following steps that (1), raw material spheroidizing annealing is conducted, specifically, raw materials are selected and spheroidizing annealing treatment is carried out on the raw materials; (2), upsetting forming is conducted, specifically, the raw materials subjected to spheroidizing annealing are subjected to cold upsetting to form a blank; (3), oil is removed; (4), zone annealing is conducted, specifically, zone annealing is carried out on a designated position of the blank subjected to oil removal; (5), acid pickling is conducted, specifically, acid pickling is carried out on the blank obtained after zone annealing through an acid pickling solution; (6), tapping is conducted, specifically, tapping and tapping are carried out on the interior of the blank through a part machine to form rivet nuts; (7), surface treatment is conducted, specifically, treatment is carried out on the surfaces of the rivet nuts; (8), screening is conducted, specifically, testing is carried out on the rivet nuts, and the rivet nuts with qualified strength are screened out; and (9), packaging is carried out. The production process of the high-strength rivet nuts has the advantages that the overall strength of the rivet nuts is improved, and the production efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of rivet nut processing and relates to a production process of high-strength rivet nuts. Background technique [0002] Rivet nuts are currently used in the fastening field of various metal sheets, pipes and other manufacturing industries. They are developed to solve the shortcomings of metal sheets and thin pipe welding nuts that are easy to melt, base materials are easy to weld and deform, and tapping internal threads are easy to slip. There is no need to tap internal threads, no welding nuts, high riveting efficiency, and convenient use. The existing rivet nuts require annealing in the production process to ensure the function of the rivet nuts, but the strength of the rivet nuts will be reduced. Contents of the invention [0003] The object of the present invention is to solve the problem that the strength of the rivet nut cannot be improved by proposing a production process of a high-strength rivet nut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B37/06B23P15/00
CPCF16B37/062B23P15/00
Inventor 袁诚
Owner 浙江坤厚汽车零部件股份有限公司
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