With a strong emphasis on producing only the highest quality with exceptional customer-oriented service, Joiner Machinery is able to provide a first-class service that is supportive to its global customers and strives to become a core extrusion parts and production enterprise with world influence.

1. Description:

Name	Profile	Shear unifromity	Elongatinal micing aboility	Dispersice nature	Cleaning action	Wetting action	Usage
SME		high	low	low	low	low	under compression

2. Wide choice of materials:

※For wear application:

Tool steel: W6Mo5Cr4V2

PM-HIP materials: SAM10, SAM26, SAM39, CPM 10V,CPM9V.

※For corrosion application:

Nitrided steel: 38CrMoAl

PM-HIP materials: WR4, SAM26, SAM39, CPM 10V,CPM9V.

※For wear and corrosion application:

PM-HIP materials: SAM26, SAM39, CPM 10V,CPM9V

※Other materials:

304, 316L, C276 etc.

3. Standerd Screw Element and Kneading Block


4. Standard production process

5. Heat treatment
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.

Technics:
Heat treatment
Nitriding treatment
Hard-chrome electroplating
Bimetallic alloy welding
Bimetallic alloy centrifugal casting

6. Processing Route Tracking List
Each process requires inspection . The production personnel shall check whether it’s meet the requirements of the drawings by themself. If it meets the requirements of the drawings,it shall be submitted to the inspection personnel for inspection. After pass the inspection to the next process personnel processing.

7. Quality Craftsmanship
We believe there’s nothing more important than getting it right the first time! That’s why our team of engineering experts does whatever it takes to design the best products to match your application. Once the design is complete, our shafts, barrels and screws are precision built to provide you with the highest level of quality and performance possible. Each product is then quality inspected for dimensional accuracy, straightness, and surface finishing.