Stainless steel 303 is an austenitic stainless steel,widely used in various fields for its excellent machinability,corrosion resistance,and workability.When choosing 303 stainless steel for precision machining,here are some key process parameters and considerations:

1. Material Characteristics:303 stainless steel contains sulfur and phosphorus,which enhance the material's machinability but also reduce its corrosion resistance.Therefore,303 stainless steel is not suitable for marine or similar environments.

2. Machining Performance:303 stainless steel has excellent machining performance with a machinability rating of about 78%,making it highly suitable for rapid turning of standard parts,shafts,bolts,nuts,etc.,on automatic lathes.

3. Corrosion Resistance:Compared to 304 stainless steel,303 stainless steel has inferior corrosion resistance,especially in environments containing sulfides.

4. Welding Performance:Due to the addition of sulfur and phosphorus,the welding performance of 303 stainless steel is not as good as other stainless steel materials.

5. Machining Parameters:

6. Turning Operation for the First Pass:Using a turning machine for the first pass helps ensure the concentricity of all cylinders.

7. Feed Rate:Selecting the appropriate feed rate ensures the surface roughness required by the design specifications.

8. Cutting Fluid and Tool Selection:Choosing the right cutting fluid and tool improves machining efficiency and surface quality.

9. Thread Control:For threaded parts,strict tolerance control is needed to ensure assembly precision.

10. CNC Engraving Side Holes:During the CNC engraving process,the machining of side holes requires precise control to meet design requirements.

11. Knurling Process:The final knurling process may be a surface treatment technique used to enhance the aesthetic quality or functionality of the product.

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.