Both toughness and casting reliability-gray iron/ductile iron dual-material

Product Specification

As still as a rock, as tough as fine steel —— Gray iron/ductile iron composite shell castings inject "rigidity and flexibility wisdom" into high-end equipment.

In the fields of industrial transmission, hydraulic system, new energy equipment and heavy machinery, shell castings are not only the core of structural support, but also directly affect the running stability, noise level and service life of the whole machine. It is difficult for traditional single material to meet the comprehensive requirements of shock absorption, wear resistance and impact resistance at the same time.

To this end, we innovatively introduced the gray iron/ductile iron composite shell casting —— skillfully combining the excellent damping performance of gray iron with the high strength and toughness of ductile iron, and redefining the performance boundary of the shell with material wisdom.

One shell and two materials, each with its own strengths.

Gray cast iron area: it is used for the parts that are not under high stress but need vibration and noise reduction.

With its flaky graphite structure, it can effectively absorb vibration, reduce running noise and improve the comfort and accuracy of equipment.

Ductile iron area: used in key bearing, connection or dynamic load area, using the high elongation and tensile strength brought by spherical graphite to ensure that the shell does not break or deform under complex working conditions.

Through precise metallurgical control and directional solidification process, the two materials are metallurgically combined at the interface, without delamination and porosity, and the overall performance far exceeds that of mechanical splicing or single material scheme.

Precision casting, reliable quality

Using resin sand/coated sand precision molding, intelligent temperature control melting and whole process quality traceability system, our shell castings have: 

The dimensional accuracy reaches CT7～CT9 level. Surface roughness Ra≤6.3μm

The internal structure is dense, without shrinkage porosity and inclusion.

Can integrate complex near-net forming structures such as oil gallery, water jacket and mounting boss.

Significantly reduce the amount of subsequent machining to help customers reduce costs and increase efficiency.

Extensive adaptation, empowering multi-industry upgrades

Electric drive shell of new energy vehicle: considering rigidity and NVH performance under the trend of lightweight Industrial gearbox/reducer housing: high rigidity+low noise, extending the life of transmission system.

Hydraulic valve block and pump body: excellent sealing and pressure bearing capacity

Structural parts of wind power and construction machinery: impact-resistant, fatigue-resistant, and suitable for harsh outdoor environment.

Customized development and win-win cooperation

We provide one-stop service from structural simulation, material ratio optimization to trial production verification, support small batch flexible production and large batch stable delivery, and help you respond to market changes quickly.

The "quietness" of gray iron and the "toughness" of ductile iron-perfectly coexist in a shell.

Choosing our gray iron/ductile iron composite shell castings means choosing lower failure rate, longer service life and higher overall competitiveness.

Contact the technical team immediately to get the exclusive shell solution, so that your equipment is "as stable as Mount Tai"!