1.Material:ZG200-400 2.class certificate:BV,KR,GL,ABS,NK,RITA 3.Ultrasonic test:Grade 2 4.Weight:18 tons to 150 tons
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 9001:2000;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
Engineering
· Haitai's engineering team is responsible for developing the appropriate methods and design requirements for establishing molding processes. We utilize the most advanced three-dimensional engineering software available and the experience of our seasoned team of engineers to help predict performance and potential defects. Simulations of mold filling and solidification analysis help us "see" issues before a part is ever cast. This capability enables our engineers to leverage data in the design of molds and production processes so that they are correct from the start and end performance is assured.
· At Haitai, we relentlessly pursue quality in everything we do, everyday. It's something we invest in, work on, and ultimately deliver to each customer, whether it's a precision casting, on on-time delivery or report. We employ a wide range of quality initiatives to support our culture of continuous improvement. In the process, we have successfully minimized variability and elevated quality in our manufacturing processes.
Possible defects:
Defect | Causes |
Unfilled sections | Insufficient material Low pouring temperature |
Porosity | Melt temperature is too high Non-uniform cooling rate Sand has low permeability |
Hot tearing | Non-uniform cooling rate |
Surface projections | Erosion of sand mold interior A crack in the sand mold Mold halves shift |
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 allowanceAdd 0.0625 - 0.25 in. (0.16 - 0.64 mm) to part dimensions to allow for machining to obtain a smooth surface.
rudder horn by KSC42 with NK cclass certificate
