large steel castings for punch press

Material:Carbon steel,low alloy steel:ZG20SiMn,ZG50Mn,ZG35SiMn,ZG35CrMo,ZG35SiMnMo,

ZG42CrMo,ZG40Cr,ZG34CrNiMo,ZG40Mn and so on.

Process:Place a pattern in sand to create a mold; 

Incorporate a gating system; 

Remove the pattern;Fill the mold cavity with molten metal;

Allow the metal to cool;

Break away the sand mold and remove the casting.

Heat treatment.

Chemical composition test,UT/MT test,mechanical property test and so on.

Surface treatment and other requirement from customer.

Standard&certificate:ASTM,BS,NF,DIN,JIS and so on;

 ISO 9001:2008;BV,CCS,DNV,NK,RINA,KR and so on.

Weight:from 3 tons to 120 tons per piece

Application:

The products can be widely used in the area of cement mill,rotary kiln,shipbuilding,

metallurgy,mine,sugar mill,powder plant,rail road,engine bed and so on.

We can provide OEM service for cement mill and rotary kiln casting parts,marine steel casting parts,sugar mill machinery parts with carbon steel or low alloy steel.

The casting parts can be supplied as following treatment:

Heat Treatment: Normalized, normalized and tempered,quench and tempered

Machining: Rough machined,semi-finished machined,finished machined

Quality warranty and testing equipment:

Magnetic powder inspection

UT nondestructive test

Dye inspection

Leeb hardness testing equipment

Mechanical property test equipment

Metallographic microscope

Direct-reading spectrometer

Features of our products:

Durable

Excellent tensile strength

Accurate level of tolerance

Good dimensional accuracy

Superb surface finishing

Easy to use and install

Possible defects:

There are no these problems for us.

Uniform wall thickness will ensure uniform cooling and reduce defects.

A thick section, often referred to as a hot spot, causes uneven cooling and can result in shrinkage, porosity, or cracking.

Corners

Round corners to reduce stress concentrations and fracture

Inner radius should be at least the thickness of the walls

Machining allowance
Add 0.0625 - 0.25 in. (0.16 - 0.64 mm) to part dimensions to allow for machining to obtain a smooth surface.