Stainless steel CNC turning mixing stirring screw shaft Trustworthy custom cnc parts

Core Advantages and Technical Features of CNC Machining of Stirring Spiral Shafts

I. Superior Control of Spiral Geometric Accuracy and Mixing Performance

The most significant advantage of CNC machining of stirring spirals lies in their exceptional geometric accuracy and mixing performance. Using high-precision CNC machining centers, the outer diameter tolerance of the spiral blades can be controlled within ±0.1mm, the pitch accuracy ±0.2mm/500mm, the straightness of the spiral shaft ≤0.05mm/m, and the blade thickness tolerance ±0.1mm.

The curved surface forming of the spiral blades is particularly crucial. Through five-axis linkage technology, complex spiral surfaces with varying pitch and diameter can be machined, with a blade surface roughness Ra of 1.6-3.2μm, smooth transitions, and no stress concentration.

High consistency in batch production ensures complete equipment integration. In the batch production of stirring spirals in the food industry, the critical dimension dispersion of 100 products does not exceed 0.2mm, and the CPK value is consistently maintained above 1.33.

Stainless steel CNC turning mixing stirring screw shaft Trustworthy custom cnc parts

II. Precise Realization of Complex Spiral Structures

CNC machining technology has transformed stirring spirals from simple spirals into multifunctional mixing elements. Segmented combined spiral design, with each segment connected by precision threads or flanges, coaxiality ≤0.05mm, allowing for flexible combinations of different functional segments.

Precise machining of the double spiral structure. The phase difference between the two spiral blades of the double spiral agitator is precisely controlled, with a meshing gap of 0.2-0.5mm, resulting in excellent self-cleaning performance.

Combined design of spiral and stirring paddle. Shearing paddles, dispersing paddles, and other auxiliary components are integrated into the spiral, with a positional accuracy of ±0.2mm, achieving dual functions of conveying and mixing.

III. Full utilization of material properties

Selecting appropriate materials based on media characteristics. 316L stainless steel is used for corrosive media such as food, offering corrosion resistance and easy cleaning; duplex stainless steel is used for highly corrosive conditions; titanium alloys are used for strongly corrosive media; wear-resistant alloys are used for high-wear conditions.

Surface-hardened wear-resistant treatment. The working surface of the spiral blades is treated with a wear-resistant layer through welding or tungsten carbide spraying, achieving a hardness of HRC60 or higher, increasing wear life by 5 times.

IV. Precise control of dynamic balance and operational stability

Dynamic balance correction of the spiral shaft. After precision machining, dynamic balancing testing is performed, with the imbalance controlled within G6.3 grade, ensuring smooth high-speed operation.

Precision machining of the shaft end sealing surface. The surface roughness of the sealing mating surfaces at both ends of the screw shaft is Ra0.4μm, and the roundness is ≤0.01mm, ensuring reliable mating with the sealing components.

Precision control of the bearing position. The bearing mounting position diameter tolerance is h6 grade, and the coaxiality is ≤0.02mm, ensuring bearing installation accuracy. For screws used in large mixing equipment, precision bearing positions extend bearing life by 30%.

CNC machining technology is completely redefining the manufacturing standards and mixing performance of mixing screws. From chemical reactions to food processing, CNC-machined mixing screws, with their superior geometric accuracy, complex spiral structure, and excellent material properties, have become an indispensable core component in mixing and conveying equipment.

Company Profile

    We are a manufacturer integrating industry and trade. We have more than 20 years of experience in production technology. We are located in Dongguan City, Guangdong Province, China. We have advanced high-end professional production and processing technology, and are committed to innovative R&D and production. After years of  market tempering and exploration, it has high-quality   technical management personnel, experienced designers, R&D personnel and a   perfect company management system cnc precision.

5-axis CNC workshop

         Our factory has a plant area of about 2,000 square meters and masters core processing technologies. It has high-end precision production equipment cnc precision: CNC lathes, 5-axis CNC, 4-axis CNC, stamping equipment, die-casting equipment, etc. 2.5-dimensional detection equipment ​

two-dimensional testing

cnc precision surface treatment

          For surface treatment, our suppliers have been working with us for many years. They have rich experience and are familiar with all the quality requirements of each other. The quality is stable and more guaranteed. Such as: heat treatment, spray painting, powder coating, blackening, silver/gold plating, electrolytic polishing, nitriding, phosphating, nickel/zinc/chromium/TiCN plating, anodizing, polishing, passivation, sandblasting, galvanizing, heat treatment , hardening, laser marking, etc. according to customer requirements. Aluminum alloy surface oxidation

Product Packaging

Packaging Details

1. Commercial packaging: 1pc/plastic bag + color box +carton + pallet;
2. Industrial packaging: (1). plastic tube + carton + pallet; (2). plastic bag + kraft paper + carton + pallet;
3. According to the requirement of customer.

FAQ

Q1: Where can I get product & price information?

A1: Send us an inquiry e-mail, we will contact you once we received your mail.

Q2: How long will I get the sample?

A2: Depends on your specific items, within 3-7 days generally.

Q3: What kinds of information do you need for a quote?

A3: Kindly please provide the product drawings in PDF, if provide in STEP or IGS will be better.

Q4: What are the payment terms?

A4: We accept 50% as a payment deposit, when the goods are prepared, we shoot photos or videos for your check, and then you can pay the balance. For small quantities, we accept Paypal, the commission will be added to the order. For big amounts, T/T is preferred.

Q5: How to deliver the goods?

A5: We deliver the products by courier company.

Q6: Are you a trading company or factory?

A6: We are factory direct with 17 experienced engineers and more than 50 employees as well approximate 3,000m2 workshop area.

Q7: What shall we do if we don’t have drawings?

A7: Please send your sample to our factory, then we can copy and provide you better solutions. If send us pictures or drafts with dimensions(Length, Height, Width), CAD or 3D file will be made for you.

Q8: Can we get some samples before mass production?

A8: Absolutely yes.

Q9: Will my drawings be safe after sending them to you?