Q1:Are you a factory or trading company? |
A1:We are a factory, Henghui has 7,00 square meters of
manufacturing plants and R&D bases |
Q2:Where is your factory located? How can I visit there? |
A2:Our factory is located in Hailong Village, Baishiyi Town,
Jiulongpo District, Chongqing City, China. All our clients, from
home or abroad, are warmly welcome to visit us at anytime! |
Q3:What is the material of your products? |
A3:The material is carbide and high speed steel,like
VA80,G6,ST7,DC53,SKD11,D2,SKH-9,SKH-51, or as our clients’
requirements. |
Q4: The maximum press your factory have available ? |
A4: Our factory has 30T,60T,160T punching machines |
Q5::How does your factory do regarding quality control? |
A5: Quality is priority. we having gained ISO 9001 Quality
Authentication Certificate. |
Production note
1. Select the tungsten steel materials and specifications size to
make the screws or nuts mold correctly.
2.According to the difference of the forming difficulty,size,length
of screws and nuts,rational design of the mold
structure,multi-station and nut mold should be allocated on a
reasonable basis the upsetting deformation and the number of
molding.
3.The mold fine craftsmanship,accurate size,bore diameter to match
the finish mirror requirements.
4.Interference voltage distribution margin,select the appropriate
alloy taper size.
5.Shell steel sleeve must be rigid and good heated,and the hardness
range should be between 42°c-48 °c after the vacuum heat treatment.
6.Keep the mold bore and the wire surface cleaning and smoothing,
cold drawn wire must be nailed after ball annealing treatment.
7.We use diamond grinding wheel to mill the cycle and the end of
tungsten.
8.The technicians adjusting the master must have good technical
level.
Common questions in using screw and nut mold
1.Mold and structural design experience with the master, not
calculated the number of cold heading,analyzing the force of the
mold deformation than the unreasonable distribution.
2.The cleanliness of the mold, the inner hole finish is not enough.
3.The rigidity of shell sleeve material, the heat resistance,and
the heat treatment hardness are unreasonable.
4.In order to save the cost of production, they selected poor
quality tungsten carbide steel and wire rod, alloy specifications
and steal material nailing serious wheels unreasonable.