FAQ

WE CHAN PRECISION is available for a factory tour for you to better understand who we are and what we are capable of. Please bring along with your parts/products (if any), we can answer any questions you have right on the spot.

WE CHAN PRECISION provides various material types and sizes to meet the market demand. Material extrusion is also available for special shapes.

Common materials used in WE CHAN PRECISION:

ALUMINUM: Aluminum, Aluminum Alloy

Aluminum 2011, Aluminum 6061, Aluminum 7075 

BRASS: Brass, Free Cutting Brass, Phosphor Bronze, Copper Alloy

C3604 (ASTM C36000)

STEEL: Steel, Alloy Steel, Carbon Steel, Free Cutting Steel, Chromium-Molybdenum Steel

SUM43 (AISI 1144), SUM24L (AISI 12L14), S15C (AISI 1015), S45C (AISI 1045), SUM23 (AISI 1215), SCM415, SCM435 (AISI 4135, 4137), SCM440 (AISI 4140, 4142), SK4, SKD11 

STAINLESS STEEL: Stainless Steel, Corrosion-Resisting Stainless Steel

SUS303, SUS304, SUS316, SUS416, SUS440

OTHER: POM (Polyoxymethylene)

WE CHAN PRECISION is capable of many other materials. Please contact us for more detailed information if your desire material does not list above.

(Customized Brass Extrusion)    (Customized Aluminum Extrusion)      (Square Brass Extrusion)      (Knurled Steel Extrusion)

WE CHAN PRECISION not only supplies precise machining parts, but we also work with your R&D department to develop new parts or to continuously improve your final products. We believe that consistent quality, communication, and flexibility are the keys to stay competitive in the global market.

If you wish to know more detailed information about your parts such as machining processes, quoting, lead time, sampling, etc., feel free to send us your sketch/2D/3D drawings with any questions to [email protected]

Urgent Order and Delivery Solution

A customer is rushing for his order. The order lead time takes about 15 days, but the customer needed it within 10 days. We suggest that we can partially deliver the parts to them and ship the remaining quantity when finished. After communicating with Susan and their customer, the customer agrees to receive partial delivery for the urgent use of the parts.

Dear We Chan:

Thank you for the shipping advice. We have received the parts. Please ship the

remaining quantity as soon as possible.

Susan from the United States

Different Production Process to Reduce Machining Cost

The part originally produced by CNC Turned and then CNC Milled afterward. We suggest the customer to consider casting and then CNC turning to save up the cost of CNC milling. They checked if casting meets their strength requirement and confirmed with us. This change saves about 25% of the original cost.

Dear Sir,

After discussing your proposal on changing the production process, we agree to do casting + CNC machining. Please send me the cost sheet and quotation by Thursday.

Siva from India

New Parts Development

We Chan helps you to develop your new parts/products. In this case, we gave some suggestions for a smoother assembly process, and also suggest a material change for a stronger structure for the final product. When the design is confirmed, we provided samples for the customer to test. We Cahn Precision would be happy to changes as long as it supports the improvements of the final part.

Hi Tom,

We have tested the samples and all works perfectly. Now we will send it to TUV for testing. I will keep you updated on when to start the production.

Jim from Australia

Many of our clients ran into questions such as 'How this part is made' or 'What kinds of machining processes are needed for my parts'. WE CHAN PRECISION has been in the CNC field and related industry for more than 30 years. We have rich experience in how your parts should be made and what processes should be taken to get your product. 

If you have questions on your parts, feel free to contact us. We Chan Precision is here to help you find the most cost-efficient way of producing precision parts.

WE CHAN PRECISION provides more than just machining parts supplies. We offer different CNC machining services to meet various precision requirements. The industry today requires more than a single machining service to complete a complex part or product. Many parts need several machining processes to produce the final part. That is how we move from a single machining service to providing many CNC machining services for customers to integrate different processes at our machining shop.

WE CHAN consults with your engineers for the most cost-efficient CNC machining services and provides suggestions for your part development. Other CNC machining services such as grinding, milling, surface finishing, tumbling and many other CNC machining services are also provided to meet your requirements. 

Machined parts sometimes require different finishes before it can be used or installed. There are various coating and treatment provide decorative or functional purposes.

WHAT IS COATING

Coating is to apply a thin covering on the surface of a part. This provides the part to have better rust-resistance, hardness, adding colors or other specific functions. Different material s may require different coating based on its properties and purposes. Here are couple common coatings in the CNC industry:   

Some coatings may add thickness to the object. High precision parts after the coating layer may exceed its tolerance. In this case, the machining dimensions need to be adjusted before coating.   

HEAT TREATMENT

Heat treatment is to keep an object at a certain degree of temperature for a while then decrease temperature to acquire a better structure of the object. Generally, there are four steps which are: Annealing, Quenching, Tempering and Normalizing.

The purpose of heat treatment is to obtain different hardness, strength, toughness, ductility, or elasticity. Not all materials can be heat treated. Only steel and 400 series of stainless steel can be heat treated.  

Heat treatment sometimes may result deformation. This depends on the size and features of object. If tight tolerances are required, secondard process will be required to achieve the dimension after heat treatment. 

(Picture Source: Wikipidia)

• WE CHAN PRECISION has minimum order quantity depends on the actual part you wish to make. If you need us to quote for you job, please provide us the drawing (or actual part), quantity needed and any other requirements.

• Sample request before placing the order is avaliable. It is very important for us to supply quality parts that meets your expectations. 

*Quantity amount will be based on the complexity and requirements of the job