Foam mould is used with Tri-box quartz sand air set molding and the quality of pallet is ensured by reasonable design of running and feeding system and placing internal chill in the middle wall-thick position.

Adopting the rational-designed inner chill and analogue simulation verification can ensure that water pipe cann\' t be melt and make directional solidification.

Effect of chromium alloying and complex modification on structures and properties of white cast iron;

An approach to improving anti-wear property of white cast iron;

The microstructure and mechanical properties of a new type wear-resistant white cast iron with the boride as wear-resistant phase were investigated.

Structure and corrosion behavior of the high silicon cast iron in several different environments have been tested by means of weight-loss analysis and metallograph,and compare the corrosion resistant of high silicon cast iron with common gray iron and white iron.

According to their matrix structure, the white irons are divided into ferrite white iron, ferrite-austenite white iron, austenite white iron, pearlite white iron and martensite white iron.

By adjusting composition and adopting step quenching process,the hardenability of the medium chromium white iron was improved,its wear resistance is equivalent to that of the Ni-hard IV,and higher than Ni-hard I by20%～30%.