1. The melting velocity of inoculant in molten iron directly influences effect of inoculation treatment.

2. A suitable inoculant , such as calcium silicide or equivalent, is to be added to the metal stream as the furnace is tapped.

3. Properly inoculant amount was used to reduce the chill depth of the cam during the production of chilled iron camshaft.

4. Inoculating effects of the inoculant have been evaluated by experiments of section sensitiveness and inoculation fading.

5. The results indicated that the selected microorganism inoculant fermentation temperature and shorten fermentation time.

6. The influence of SG inoculant on graphitizing annealing of malleable cast iron was investigated.

7. Inoculation with large amount of inoculant can increase properties of castings and process yield.

8. The influence of inoculant addition amount on the structure and properties of camshaft was investigated.

9. Experimental results show that the pressed inoculant block has a good inoculant effects and suitable for production of the thinness ductile iron castings.

10. But the application of inoculant in field was blocked as the problem of nodulation competitiveness between inoculant strains and indigenous strains was not been solved completely.