SKD11 DIN Twin Screw Extruder Plastic Machine SK Screw Elements Wear Resistance

Product Description

The SK screw element is commonly employed in the blanking and side feeding sections to enhance storage capacity, thereby preventing pressure build-up in these areas. This element features a large lead and a milled arc curve on the thrust surface (akin to the thrust surface of a single screw), allowing for an increased free volume in the twin-screw feeding section. This design facilitates the efficient feeding of powders and granules, particularly those with lower bulk densities. Additionally, in the side feeding or natural exhaust sections, the SK screw element promotes the re-expansion of compressed materials, mitigating the tendency for localized backflow.

Specification

Screw Diameter	75 mm
Screw Design	SK Screw Element
Hardness	58-60HRC
Brand Name	Nanxiang
Surface Treatment	Polishing/Sand Blasting
Materials	SAM10/SAM39/WR5/WR14/W6Mo5Cr4V2
Place of Origin	Sichuan , China
Warranty	1 Years
Screw Range	Φ 15.6 - Φ 430mm

Extruder Screw Materials

1. For wear application:

Tool Steel : W6Mo5Cr4V2;

PM-HIP material : SAM10 SAM26 SAM39 CPM10V CPM9V

2. For corrosion application:

Nitrided Steel: 38CrMoAI;

PM-HIP material : SAM26 SAM39 CPM10V CPM9V

3. For wear and corrosion application:

PM-HIP material:SAM26 SAM39 CPM10V CPM9V

4. Other Materials:

Stainless Steel: 316L, C276, SX737 etc.

Screw elements include

Single flight, twin flight and tri-lobe elements

Kneading blocks and single

mixing paddles or discs

High volume intake elements

Conveying elements

Compression elements

Reverse elements

Flow splitting elements to mix different viscosities

Transition elements from single flight to twin flight

Support twin-screw extruder brand

Quality Control

1). Materials control: All the materials are purchased from the domestic brands or European twin-screw specialty materials suppliers, which tested by elemental analysis and metallurgical inspections to ensure the quality.

2). The internal splines are checked by the spline plug to ensure interchangeability of the elements

3). All components are machined by CNC machines to ensure the shapes and tolerances of the elements

4). Adopt the European high-speed steel powder processing technology, and do the treatment according to the strict heat treatment 4. process to ensure the wear and corrosion performance same as the foreign brands.

5). Professional technical team can not only provide timely and accurate mapping sample design but also the combination of elements of technical services.

6). There are various prepared technical information and the fixtures for the various brands extruders to ensure the timely lead time. The common components have a lot of stock, even the new one, it can be delivered within 45days.

7). The modern management system can ensure the products 100% qualified and tracked.

Tool Steel

Product accuracy

There are some differences between Nanxiang Machinery and Nanjing's production technology. Their finishing process is carried out before heat treatment, and the deformation after heat treatment is not controlled, so their accuracy is not easy to control. But our finishing process is carried out after heat treatment, which can eliminate the deformation of parts in heat treatment, so the precision is higher, and thus can achieve zero seam connection.

Production Process

	NO.1 Workblank Select high-quality raw materials
NO.2 Piecewise According to the drawing section length
	NO.3 Hit bottom hole Rough machining the bottom hole,and then pull spline
NO.4 Machining thread Professional high-end processing equipment,rough machining threads
	NO.5 Finish machining thread
NO.6 Threading grinding Further control of tolerance Length:-0.01mm-+0.01mm OD:-0.03mm-0mm Transition arc:-0.02mm-+0.02mm

Packing and Delivery

Packing Details: According to your order quantity packaging, shipping wooden boxes, air carton.

Delivery Details: 20-60 days after order.

FAQ

Q: Are you a trading company or a manufacturer?

A: We are a manufacturer.

Q: Where is your factory located? How can I visit there?

A: Our factory is located in Chengdu, Sichuan Province, China. You can fly directly to Chengdu Airport, and we will pick you up upon arrival. We warmly welcome all our clients, both domestic and international, to visit us.

Q: How long will your product last?

A: The lifespan of our products can vary greatly depending on the operation time, materials used, and working conditions. Therefore, it is difficult to provide an exact duration.

Q: Are your quotations all FOB?

A: Yes, all our quotations are FOB (Free on Board).

ABOUT NANXIANG MACHINERY

WHO WE ARE

Chengdu Nanxiang Qiaolin Machinery Co., Ltd was established in 2008 and is a leading enterprise specializing in the production of twin-screw extruder parts. After nearly 20 years of prosperous development, our company now possesses several sets of advanced CNC machines and special processing equipment for manufacturing screws.

Currently, our machining operation has basically achieved intellectualization and automation. Advanced processing methods, strong technical force, and sophisticated processing techniques ensure the quality of each product, and the technical indicators can fully meet the requirements

of customers.

OUR PRODUCT

We are a professional manufacturer of twin-screw extruder parts, focusing on the production of screw elements, barrels, and shafts. Our products are widely applied in renowned international brands such as Coperion, Lerstritz, Berstorff, KOBE, and JSW, serving industries like plastics, food, feed, pellet manufacturing, pharmaceuticals, and new energy.

We provide customized services for various non-standard parts, barrels, and shafts and can be custom-produced according to the special needs of customers. We are also proficient in the processing technology of more than 10 kinds of powder alloy materials to achieve wear-resistant and corrosion-resistant solutions under various working conditions.

CUSTOMER SERVICE

Our company, with strong technical force, superior processing equipment, advanced production technology and strict inspection system, produces high-quality products, which are highly praised by our customers.

We are committed to providing high-quality, high-precision, and high-performance twin-screw extruder accessories to customers worldwide to meet the needs of different industries and application fields. We deeply understand that customer satisfaction is the key to the success of an enterprise.

Therefore, we provide comprehensive customer service, from pre-sale technical consultation and solution design to in-sale production progress tracking.