Integrated nozzle ring of booster

The utility model discloses an integral nozzle ring for turbochargers, comprising a nozzle ring heat shield, which in the center place of the nozzle ring heat shield is equipped with a center hole, on the periphery of one side of the nozzle ring heat shield are distributed uniformly with a plurality of nozzle ring blades, on the periphery of another side of the nozzle ring heat shield is equipped with a ring-shaped boss, and the integral nozzle ring is made of heat-resistant cast steel. The utility model, comparing to the prior art, combines the prior two separated parts into one to simplify the integral structure, lowing the cost and realizing the former functions; and the whole nozzle ring is made of heat-resistant cast steel to overcome the prior problem of details deformation caused by different material parts under heat expanding, preventing the case pulling of the turbocharger, to increase actual service life effectively, and has a wide value in market.