1. For wear application:
* Tool Steel : W6Mo5Cr4V2;
* PM-HIP material : SAM10,SAM26,SAM39,CPM10V,CPM9V
2. For corrision application:
* Nitrided Steel: 38CrMoAI;
* PM-HIP material : SAM26,SAM39,CPM10V,CPM9V
3. For wear and corrision application:
* PM-HIP material:SAM26,SAM39,CPM10V,CPM9V
4. Other Materials:
Stainless Steel: 316L,C276 etc.
(4) Types of the Screw Segments
* Convey Screw Segment * Mixing Screw Segment
* Kneading Block & Disk * Transition Screw Element
* Deep groove transfer element * Screw element for side feeder
* 1-flighted,2-flighted,3-flighted screw elements
(5) Standerd Screw Element and Kneading Block
(6) Quality Control
* Materials control:
1. All the materials are purchased from the domestic brands or
Eurpean twin-screw specialty materials suppliers,which tested by
elemental analysis and metallurgical inspections to ensure the
2. The internal splines is 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 foreigh brands.
5. Perfessioal 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
fitxtures 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.
* Heat treatment by Ourself
As we all know, heat treatment is very important in the screw
production process. In order to ensure the quality of products,
Joiner has purchased professional heat treatment equipment to
produce, so that we can control the construction process by
ourselves. In China, we are the only company that does heat
treatment by ourselves, and the heat treatment of screw components
made by Nanjing factory is processed by outsiders, so the quality
of products can not be completely guarantee.
|Temper Furnace||Vaccum Quencher|
* Product accuracy
There are some differences between Joiner 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.
(6) Production and Inspection of Equipment
We also have advantages in production equipment and inspection
Joiner has 70 advanced equipments such as CNC thread grinder, CNC
thread milling, CNC kneading block grinder, CNC forming milling,
4-axis machining center, automatic deep hole grinder, CNC lathe,
CNC surface grinder, CNC external grinding, CNC band saw, laser
marking machine, vacuum quenching furnace and vacuum tempering
furnace. After the raw materials enter the market, all the
processing procedures are in-house.