Grade 6.8 304 Stainless Steel Round Spot Weld Bolts

304 Stainless steel round spot weld bolt.

Description

Annealing
Purpose: Heat the wire to an appropriate temperature, keep it for a certain period of time, and then slowly cool it to adjust the crystal structure, reduce the hardness, and improve the wire processability at room temperature.

1.Feeding: The product that needs to be processed is placed in the furnace.
2.Raising temperature: Raise the temperature in the furnace (about 3-4 hours) to the specified temperature.

3.Heat preservation: the material 1018, 1022 wire is kept at 680℃-715℃ for 4-6h, the material is 10B21, 1039, CH38F wire is kept at 740℃-760℃ for 5.5-7.5h.
4.Cooling down: The temperature in the furnace is slowly (about 3-4 hours) lowered to below 550°C, and then cooled to room temperature along with the furnace.

Cold heading (forming)
Purpose: Cold forging the wire to achieve a semi-finished shape and length (or thickness).

Bolt (general head type, one die and two punches)
1. Cutting: Cut the wire stuck in the cutting mold into blanks by moving the movable scissors in one direction.
2) One punch: The die is fixed, and the head of the product is preliminarily formed by a punch, so that the next stroke can be completely formed. When the product is a straight groove, one punch has a concave and elliptical groove, and when the product is a cross groove, the other punch has a concave and square groove.
3) Second punch: After the first punch, the punch runs as a whole, the second punch moves to the front of the punch, and the second punch moves forward at the same time to form the final product. Afterwards, the blank is pushed out by the back punch.

Factory Diaplay

Plating line

Test equipments

Package Room

Q1: Are you a manufacturer or a trading company?
A: We are a manufacturer, I have a factory in Shenzhen, we will provide you with factory price, welcome to cooperate.

Q2:Can you provide samples?
A:We can provide samples according to your request.

Q3:Do you have after sales service?
A: We usually reply to you within 24 hours. In case of emergency, please contact us directly by telephone or email.

About us

Jiaxing Dexun Co., Ltd. was established in 1997, origin from Taiwan, we are professional manufacturer and exporter integrated with design, research & development, manufacturing and sales of OEM/ODM stamping parts,deep drawing parts, standard welding fasteners and non-standard welding fasteners.

* Located in jiaxing city, only about 1 hour's drive from Shanghai, Hangzhou, Ningbo, Suzhou, these important cities, the transportation is very convenient.

* 2 mature mould development workshops with advanced equipment to develop mould for customers.

* 2 International approvals,Verify & certificate in accordance with ISO9001,IATF16949, work with SGS, operate the PPAP Level 3.

* 2 labs of quality inspection,Control products quality strictly; equipped with various quality testing machines including direct-reading spectrometers, tensile testing machines, CMM machine, X-ray flaw detection instrument.

* 2 quenching and tempering heat treatment lines.

* 2 automatic welding lines.

* 4 Powder coating & Painting lines, Plating lines

* 42 people professional R&D team : 30 special technicians and 12 senior engineers.

* 20 years’experience on manufacturering OEM/ODM products

* 100 sets of automatic production machines: Have 10 sets of automatic stamping & deep drawing equipments, 50 cold forming machines; 40 tooth grinding machines ,equipped with Japan, Germany,etc imported machines.

* 175 employees

* 10 millions monthly production capacity

* 35 countries exported to

* Supplying products to GM,John deere,Wal-Mart，etc

* Implement environment protection concept; strictly operate the facilities and processes under environmental requirements.

We use advanced equipment to improve cost and quality at the same time to make sure lowest price and best quality for customers. We have quality control experts & engineers to test every piece product before shipment. We keep on studying to provide professional service.

Our Mission & Vision

We always work hard to be an environment protection model enterprise. We strive for sustainable development. We hope to be a win-win partner of our customers all over the world.

Environment protection mission:

A full series of environment policies are applied to our every manufacturing activities. Firstly, to propagandize environment protection policy to make sure environment-friendly concept is everywhere in our company.
Every new staff will have environment protection training class. All staffs have environment protection knowledge and policy lecture every month. All the operation manual will marked out environment protection requirements.
Secondly, to establish environment protection responsibility policy.
Thirdly, to have basic environment protection management.
Step 1: Have environment monitor every time.
Step 2: Manage the pollutant treatment equipment efficiently.
Step 3: Establish permit system of pollutant discharge.
Step 4: Establish legal audit system.
Fourthly, to build up emergency rescue system.