ambience

1), described by equation (1), pertains to cooling in gas ambience (on air), and in all events, when at contact (the ambience-stocking up) does not change the condition of the ambience.

The second group is characterized by change conditions of the ambience in connection with boiling (Fig.

Forming the steam film at moment of the interaction coolling ambience with surface of the cutting causes slow cooling in consequence of small velocity of the tap of the heat (the stage of the film boiling).

For decision this equation necessary to assign the marginal conditions: initial sharing the temperature inwardly stocking up and law heat exchange between surface of the stocking up and coolling ambience.