SUS 304 CNC Machining Parts With Anodizing Sandblasting Screen Printing PVD Coating Surface Treatment

This part is made of stainless steel 304,a material widely used across various fields due to its excellent corrosion resistance,good workability,and superior physical and chemical properties.304 stainless steel contains about 18%chromium and 8%nickel,which allows it to maintain stable performance in harsh environments such as潮湿,acidic,or alkaline conditions.Additionally,304 stainless steel boasts outstanding heat resistance and low-temperature strength,retaining its performance at high temperatures while maintaining good toughness under low-temperature conditions.In terms of machining,304 stainless steel has good ductility,with an elongation after fracture δ5≥40%and a reduction of area ψ≥60%.This results in significant plastic deformation during processing,especially at higher temperatures where it maintains high strength,leading to greater cutting forces.Under conventional cutting conditions,the specific cutting force of 304 stainless steel reaches 2450 MPa,which is more than 25%higher than that of 45 steel.Moreover,due to severe work hardening,the strength after processing σb can reach over 1500 MPa,with a hardened layer depth of 0.1-0.3mm.During cutting,the poor thermal conductivity of 304 stainless steel,with a thermal conductivity of only 16.3-21.5 W/m·K,which is one-fourth that of 45 steel,results in high local temperatures in the cutting zone,about 200-300℃higher than that of 45 steel.This characteristic of high-temperature strength makes tools prone to adhesive wear,especially during the cutting process where the affinity with the tool is significantly increased,leading to adhesion,diffusion phenomena,and the formation of"built-up edge,"causing tool adhesive wear.In particular,hard inclusions formed by some carbides accelerate tool wear and even cause tool edge chipping,greatly reducing the service life of the tool.Therefore,when machining 304 stainless steel,there are strict requirements for tools and cutting parameters.Here are some key steps in the machining process:

• Turning the cylindrical surface:When turning the cylindrical surface,it is necessary to choose reasonable turning speeds and feed rates to reduce the generation of cutting forces and heat.Tools should have high strength,high toughness,and good heat and wear resistance.Common tool materials include cemented carbides and high-speed steel.

• Machining side round holes:When machining side round holes,precise fixtures are needed to secure the workpiece to ensure that the holes and slots on the side do not deform during processing.The design of the fixture must consider the stability of the workpiece and the forces experienced during processing to prevent displacement or deformation of the workpiece under the action of cutting forces.

• Selection of cutting parameters:The choice of cutting parameters is crucial for machining quality.They should be reasonably selected based on tool material,workpiece material,and processing requirements,including cutting speed,feed rate,and depth of cut.For 304 stainless steel,lower cutting speeds and higher feed rates are usually required to reduce the generation of cutting forces and heat.

• Use of cutting fluid:Due to the poor thermal conductivity of 304 stainless steel,using the appropriate cutting fluid can effectively reduce cutting temperatures,reduce tool wear,and improve machining efficiency and surface quality.

• Tool maintenance and replacement:During the machining process,the wear condition of the tools should be regularly checked,and worn tools should be replaced in a timely manner to ensure machining quality.

1. CNC turned parts description

CNC turned parts offered by WELTECHNO are widely used in many fields such as aerospace, automotive, chemical manufacturing, watches, electronic equipment, chassis, engines, furniture, food processing and so on. As an ISO9001:2015 certified company, WELTECHNO has a wealth of experience in customized design for CNC machining and is committed to providing customers with high quality products and services.

2. Services

WELTECHNO offers a wide range of CNC machining services, including CNC turning, CNC milling, laser cutting, bending, spinning, wire cutting, stamping, electric discharge machining (EDM), and injection molding. Our technical team is able to provide customized solutions according to the specific needs of our customers.

3. Material

WELTECHNO supports a wide selection of materials

4. Surface treatment

WELTECHNO offers a wide range of surface treatment options, including anodizing, sandblasting, screen printing, PVD coating, zinc/nickel/chrome/titanium plating, brushing, spraying, powder coating, passivation, electrophoresis, electrolytic polishing, tumbling, laser/etching/engraving, and more. These treatments can significantly improve the corrosion resistance and aesthetics of the parts.

5. Tolerances

WELTECHNO's CNC-turned parts have a tolerance range of +/-0.002~+/-0.005mm, ensuring the accuracy and consistency of the parts.

6. Surface roughness

The surface roughness of WELTECHNO's CNC turned parts can be as low as Ra0.1~3.2 to meet the needs of different applications.

7. Drawing Acceptance Formats

WELTECHNO accepts a wide range of drawing formats, including STP, STEP, LGS, XT, AutoCAD (DXF, DWG), PDF or samples.

8 Delivery time

Delivery time is 1-2 weeks for samples and 3-4 weeks for mass production.

9. Quality assurance

WELTECHNO's product quality conforms to international standards such as ISO9001:2015, SGS, RoHS, TUV, etc., which ensures that our customers get high quality products.

10. Payment Terms

WELTECHNO accepts a variety of payment methods, including Trade Guarantee, TT/PayPal/West Union, and so on.

11. Advantages of CNC turned parts

WELTECHNO's CNC turned parts offer a variety of advantages, including plain and customized packaging, and are widely used in medical, model, nameplate, oil drilling, oil refining, optical equipment, robotic equipment, semiconductor manufacturing, and more. We also accept OEM and ODM licenses and offer rapid prototype services, usually within 4-7 business days.

12.Customization Service

· Brand name: WELTECHNO.

· Model: OEM.

· Country of origin: China.

· Material standard: ISO, DIN, ASTM, UNS, AISI, JIS, BS, NF.

· Shape Model: CNC parts.

· Application industries: sensors, automotive, automation, instruments.

· Processing type: precision CNC turning, CNC milling.

13. Packaging and Transportation

Each CNC turned part is carefully packed to ensure safe transportation and delivery. Reliable transportation companies are used and tracking information is provided to ensure that the product reaches its destination on time.

14. Company profile

WELTECHNO is a full-service precision CNC machining solutions company serving a variety of industries including aerospace, construction, automotive, commercial, medical, optical and marine. We are committed to providing our customers with high quality CNC turning, CNC milling, metal stamping, plastic injection molding, laser cutting and sheet metal forming services.

The manufacturing industry has witnessed a significant change in CNC technology, and WELTECHNO's CNC turned parts stand out for their high precision, versatility and efficiency. Manufactured using state-of-the-art CNC automatic lathes to ensure the highest standards of quality and precision. A wide selection of materials is available to meet a variety of applications.CNC machine-turned parts meet precise customer specifications, saving time in assembly and maintenance. High precision CNC turned parts are suitable for industries with tight tolerances.CNC automated turned parts have fast turnaround times without compromising on quality. Provide full OEM and ODM support, personalized solutions.

15. Frequently Asked Questions (FAQ)

· Unsatisfactory Parts: We guarantee the quality of materials and workmanship, and management will endeavor to provide satisfactory service.

· GET A QUOTE: Detailed drawings, material, quantity, surface treatment, special packaging or other requirements are required.

· Minimum Order Quantity (MOQ): Small quantities are acceptable.

· Sample Inspection: Sample fee is required and will be refunded after mass production.

·Customized parts but can't draw: design service is available.

· Confidential design: Non-disclosure agreement (NDA) can be signed.

·Shipping and delivery time: usually shipped by DHL, UPS, FedEx or TNT, usually takes 3-5 days to arrive.

·Order Process: Understand the requirement or application, quote, confirm samples and pay deposit, arrange production.

· CNC turning and milling: the use of computer-controlled machines to machine materials (such as stainless steel) into precise parts.

·Common grades of stainless steel: 304 (general purpose, excellent corrosion resistance), 316 (better corrosion resistance, especially in marine environments), 440C (high hardness, used for knives and tools).

·Typical lead times for CNC machined stainless steel parts: a few days to a few weeks depending on complexity and quantity.

·Selecting the right machining process: depends on part complexity, material properties, required tolerances and production volume.

·Design recommendations for CNC machining stainless steel: Avoid sharp corners and use rounded corners to reduce stress concentrations; simplify shapes; and specify tolerances carefully.

· How to ensure quality in CNC machining: Includes in-process inspection, final inspection, material certification and compliance with industry standards.

Materials used by ·: Depending on project specifications and requirements, a variety of materials can be fabricated, including aluminum, stainless steel, brass, copper, plastic and zinc.

·Provides custom CNC turning services: Yes, WELTECHNO specializes in OEM services and can produce custom CNC turned parts according to specific design requirements.

·The tolerances that can be achieved with CNC-turned parts: Manufacturing CNC-turned parts with a high degree of accuracy allows for tight industry-specific tolerances to be achieved.

• · Industries that benefit from CNC machining: aerospace, automotive, medical devices, food and beverage, oil and gas.15.

WEL International is based in Shenzhen, China. Currently there are one plastic injection/molding (Yusu Precision) factory in Huizhou, China and one CNC machining factory (WEL Precision) in Donguan, China. It was estimated in 2009. So far, there are 150 employees are working here. GB/T19001-2016/ISO9001:2015 and IATF 16949:2016 Certified.

WEL provides customers service in all aspects of product development: Product Construction Design, Material Selection, Mold Design, Mold Making and Mass production, complete with inspection reports and samples. Products range from electronic equipment to precise automobile components. Equipped with advanced machines like Korea "Daewoo" CNC milling, automatic turning, injection machines (From 45 tons to 1200 tons). Having an experienced technical supporting team and applying an overall CAD/CAE/CAM system in designing and manufacturing, our facotry has built an ongoing and solid reputation from companies like BROTHER, TOSHIBA etc.

Welcome you to visit us in the factory.