Screw Process:

Blanking ->Punching ->Rough turning ->Hardening & Tempering ->Finish turning ->Rough Milling ->Finish Milling ->Make grooves for bimetallic ->Bimetallic by PTA ->Rough Grinding ->Rough polishing ->Make splines or Keys ->Nitriding ->Finish Grinding ->Polishing ->Packing & Delivery

Barrel Process:

Blanking ->Punching ->Rough turning ->Rough Boring ->Hardening&Tempering ->Finish Boring(0.4-0.8mm) ->Make grooves for bimetallic ->Bimetallic by PTA ->Finish Grinding ->Finish turning ->Milling the feeding hole & exhausting holes ->Nitriding ->Make other small holes,thermometer hole,location hole->Grinding surface of feeding hole & exhausting hole ->Polishing ->Packing & Delivery

1.What information should be supplied when inquiry price of screw and barrel?

a.Conical /parallel twin screw barrel - I.Extruder brand  II.Model.

   eg.Jwell 65/132,LSE80/156,KMD114/36,BEX90/22 etc.

b.Injection machine screw barrel - I.Injection machine model  II.Screw diameter  III.Type A,B or C.

c.Single extruder screw barrel - I.Plastic products  II.Screw diameter & L/D

2.What information need supplied when confirm production drawing?

a.gearbox nameplate,if machine made in China,only supply gearbox nameplate,that we can confirm the production drawing.

If can not or not from China,it is best to supply:

   nnection flanges size or barrel connection thread size

   c.thermocouple holes location,qty & size

   d.screw connection coupling size: I. screw end max.diameter  II.Number of keys.

   e.barrel outside sketch

3.Which one is better for PVC profile?Bimetallic or Nitriding?

We suggest to use nitriding screw barrel for PVC profile to have better quality finished products.

4.How to choose screw barrel for injection machines?

For new/virgin plastic raw material,we suggest use nitriding ones.

For material with glass fiber less than 15%~30%,we suggest to do bimetallic screw and barrel.

For material with glass fiber more than 30%,we suggest to do tungsten bimetallic screw and barrel.

5.How about the guarantee of screw barrel?And life time?

Our normal guarantee is one year after date of departurement.Sometime,depends on real raw plastic material.

Life time is about 3~5 years for extruder single screw barrel,and around 20,000 work hours for PVC material.

Mostly,depends on real raw plastic material.

6.How to give good service?

Our engineers available to service machinery overseas.

We promise,any quality problem from Batten,we are great responsibility to resolve for clients.

Once receive your inquiry or question,our sales will contact with you within 24 hours.

Each screw barrel will be inspected twice before delivery.First inspection is before nitriding,the second time is after nitriding.

7.Which raw steel Batten use to make screw barrel?

We choose Shanghai Bao Steel and Fushun Special Steel.These steel suppliers are TOP 10 producers in China.

8.Is Batten a factory or a trading company?

Zhoushan Batten Machinery Technology Co.,Ltd is professional manufacture of screw barrel for plastic & rubber machinery.
Zhoushan Batten Import and Export Co.,Ltd is a member of Batten Group,specializes in exporting kinds accessory parts of plastics machinery,and annual sales is more then 5 Million US dollar.

9.What's Batten Location?

Pls search on Google map"Laotangshan Tunnel,Cengangzhen,Dinghai,Zhoushan City,Zhejiang Province".There we are.

10.How to go to Batten from other city?

Since there is no train to our city,but you can take a bus from Shanghai/Ningbo.Our bus station name is "DINGHAI,ZHOUSHAN CITY."

1.Engineers available to service machinery overseas

2.Sevice on line,24*7 hours