Polymer insulator ductile iron fitting with zinc coated surface

Polymer insulator ductile iron fitting

Material: Ductile cast iron, steel, stainless steel or aluminum

Production method:forging,sand casting, investment casting, die casting, permanent mold casting, forging and CNC machining

Thickness of hot dip zinc coating:70-200um

Connecting type: socket type, groove type, eye type, bolt&nut type, clevis&tongue type, etc.

Application: Power transmission system, contact network of railway

Description of investment casting process:

We offer to our customers two types of investment cast processes. They are the shell process (Colloidal Silica process) and the water glass process.  The shell process is used to cast complex high quality parts with requirements of a very good surface finish and close dimensional tolerances.  The water glass process is typical of the process in the early stages of investment castings.  It generally is capable of much larger castings than the shell process, but does not have as good of surface finish or tolerances.  The water glass process provides parts that have better surface finish and dimensional tolerances than sand castings.

A wide range of alloys is available for both processes. They include carbon steels, low alloy steels, stainless steels, tool steels and copper based alloys. Please check below for materials available.

Shell investment cast parts can range from a weight of just a few ounces to approximately 80 pounds. If you are concerned with precision in very small parts, we are especially proficient at very fine detail work including teeth and serrations. Water glass castings may range in weight from several ounces to approximately 200 pounds.

First article layouts and spectrometer material certifications are provided with all first article samples.

A variety of secondary operations can be performed on both types of investment castings. They include heat treatment, machining, plating, painting, polishing and buffing, assembly services and even custom packaging.

Pictures of some other parts.

• Wax pattern making workshop

   

   

  

   

  Wax pattern tree

   

  

   

   

  Shell making workshop

   

  

   

  Spectrometer used to control chemical composition

   

  

   

  Machining shop

   

  

   

   

   

  Supply export quality packaging& customized as customer's request

  

Our customers: