1. Main casting products: ductile iron and gray iron.

2. The machinability of gray iron was analyzed.

3. The effect, methods and precautions purified the molten gray iron, ductile iron and steel was introduced.

4. The current studies and some new techniques on gray iron production are simply outlined in.

5. Forcing the graphite flakes that are characteristic of gray iron to agglomerate into spheres is the challenge for the metallurgist.

6. Research on HT250 gray iron flame welding with multi-alloying cast iron torch welding rods. Hardness, crack resistance and machinability of the welded joint is tested and analyzed.

7. In order to improve the properties of gray iron, the B containing pig iron is added to it instead of high priced ferroboron.

8. Gray iron has corrosion resistance that is improved over steel in certain environments.

9. Inoculation treatment increases the eutectic cell count of gray iron and, as a result, causes undense defects of the castings including: inner shrinkage, or outer sink.

10. The surface induction quenching test on gray iron and spheroidal graphite cast iron indicated that the equipment was easy to operate, and had strong stability, it was provided with practicality value.

11. Gray iron has excellent dampening properties and is easily machined.

12. Cast iron material used for fine makings of gray iron or alloy cast iron.

13. The forming process of castchromized alloy layer on the surface gray iron has been studied.

14. Characteristics, principle, process and application result of the technique to use melting diffusing welding to repair defect of gray iron castings was described.

15. Die cast A 1 - Si , ferrous M product and gray iron are selected to perform wear resistanee test.

16. Abstrace : The influence of titanium on the structure and properties of gray iron was investigated.

17. The results show that the eutectic transformation temperature of gray iron decreases with the increase of antimony content.

18. Engine Block: it forms the main framework or foundation, of the engine. The block is cast mainly from gray iron or iron alloy.

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19. The core manufacturing method and core drying method for producing gray iron casting with deep holes was introduced, and the points should be paid attentions during cores setting were described.

20. This paper quantitatively analyzed the distribution of graphite in inoculating gray iron by image analysis.

21. Thefinite element method was developed to simulate 3 - dimensional thermo - elastic - plastic transient stress development in gray iron castings.

22. The cooling-solidification diagram can be used to forecast whether the cast iron will solidify in accordance with the white iron style, gray iron style or mottled iron style.

23. The rare earth - magnesium - calcium alloy is a compacted agent more suitable for high gray iron in cupola.