Production method for efficiently producing high-strength bolt

A technology of high-strength bolts and production methods, applied in the direction of screws, threaded fasteners, connecting components, etc., can solve the problems of substandard strength, no thread strengthening of thread rolling machine, and decline in anti-wear effect, so as to improve structural strength , Guarantee the effect of anti-corrosion and anti-wear properties

Pending Publication Date: 2022-03-25
苏州海墨精密五金有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The bolts currently in use are often quenched and annealed to strengthen the rough bolts. However, in the actual production process, the threads produced by the rolling machine have not been stably strengthened, resulting in subsequent use. If the strength is not up to standard, there will be problems of slipping wires, and in the subsequent use process, a large amount of rust will be generated, and the anti-wear effect will also decrease

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Production method for efficiently producing high-strength bolt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention provides a technical solution: please refer to figure 1 , a production method for efficiently producing high-strength bolts, comprising the following steps:

[0023] Step 1. Firstly, the rough bolts are roughly ground, then pickled, and dried.

[0024] Step 2: Quenching the rough bolts, isothermal annealing, and pickling the rough bolts.

[0025] Step 3: Adjust the parameters of the thread rolling machine, and process the heated rough bolt blank.

[0026] Step 4: Deburring the threads produced by the rough bolts, and then performing proper grinding and polishing.

[0027] Step five, passivation treatment and phosphating treatment are performed on the rough bolt blank.

[0028] Specifically, according to the operation steps in the first step, the bolt blanks are casted, demoulded and cooled with high-quality molten iron.

[0029] Specifically, according to the operation steps in step 1, the components of the pickling solution used for pickling a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a production method for efficiently producing a high-strength bolt, and belongs to the technical field of bolts.The production method for efficiently producing the high-strength bolt comprises the following steps that firstly, rough polishing is conducted on a bolt rough blank, then acid pickling and drying are conducted, and secondly, quenching and isothermal annealing are conducted on the bolt rough blank, acid pickling is conducted on the bolt rough blank, and the bolt rough blank is obtained; the method comprises the steps of heating a bolt rough blank, adjusting parameters of a thread rolling machine and conducting thread machining on the heated bolt rough blank, conducting burr cleaning on threads generated by the bolt rough blank and then conducting appropriate grinding and polishing, and conducting passivating treatment and phosphating treatment on the bolt rough blank. According to the method, acid pickling is utilized to stably clean an oxidation film of a bolt rough blank, it is guaranteed that the structural strength of threads produced by a thread rolling machine is improved, passivation and phosphorization are utilized to stabilize the outer wall of the bolt, and the corrosion resistance and the abrasion resistance are guaranteed.

Description

technical field [0001] The invention relates to the technical field of bolts, in particular to a production method for efficiently producing high-strength bolts. Background technique [0002] Bolts, mechanical parts, cylindrical threaded fasteners with nuts, a type of fasteners consisting of a head and a screw (cylindrical body with external threads), which need to be matched with nuts for tightening Fixedly connect two parts with through holes. This connection form is called bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection. [0003] The bolts currently in use are often quenched and annealed to strengthen the rough bolts. However, in the actual production process, the threads produced by the rolling machine have not been stably strengthened, resulting in subsequent use. If the strength is not up to standard, there will be problems of slipping wires, and in the subsequent use process, a ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B23P15/00F16B35/00
CPCB23P15/00F16B35/00
Inventor 侯海祥李俊
Owner 苏州海墨精密五金有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap