Heavy Duty Cast Vertical Column Rolling Mill for Forging Press

1)The engineer will firstly prepare the technology and do a simulation before pouring.

2)We will make a pattern of the kiln tyre based on engineer's technology.

It will cost us around one week.

After that the engineer will check the dimension and make a record.

3)Sand molding making will be made by experienced wokrers.

Sand casting has the advantages of shape and size flexibility and is very cost effective even with lower production volumes.

· Complex geometries and internal passageways

· Prototyping and low volume order availability

· Extensive range of over 200 alloys

· Ability to meet most advanced testing, heat treating and finishing requirements

· Experts in specialized castings that are difficult to make for demanding applications

· Extensive experience with 3D printed molds and cores

4)Pouring and cooling.

There are one 8tons electrical arc furnace;

Two 50 tons medium frequency furnace;

One 120 tons refining furnace and one 120 tons VD furnace;

5)Clean the sand and cut the riser after normalizing

6)Heat treatment will cost 7days( 4 days normalizing and 3 days tempring).

There are 8 heat treatment furances with max. one is 12m*9m*6m.

7)dimension check and draw a line for machining.

8)Rough machining

9)NDT withe qualified inspector

10)Welding repair if needed and tempering for stress relief

We have the WPS for some common material.

For some specical ones,we can also make a new  WPS with third party witness.

11)Final machining and NDT

12)Customers' inspection and packing

Haian Haitai Casting Co.,Ltd. is established in 2003. 

We supply large steel castings with low carbon or alloy steel from 3 tons to 150 tons per piece.

With a quick development,now we had supplied steel castings 6,000 tons per month.

There are three workshop for sand mold making,one workshop for machining and one for post procedure.

Our main products are for cement mill(around 30%).

We supply around 400pcs kiln tyres,170 sets of ring gears and 930pcs supporting rollers a year.

We also have rich experience of the castings for shipbuilding with 9 class certificate.

We do the test according to diffrent production step,

such as chemical composition,UT,MT and mechanical property.

In 2021,Haitai inspection and testing center got approval from CNAS.

Our company is near to Shanghai port and we can supply different packing according to customers' specification.