Environment-friendly type manufacturing method for car supercharging turbine

Environment-friendly type manufacturing method for car supercharging turbine

  • CN 105,506,377 A
  • Filed: 12/29/2015
  • Published: 04/20/2016
  • Est. Priority Date: 12/29/2015
  • Status: Active Application
First Claim
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1. an environment-friendly type preparation method for automobile charging turbine, is characterized in that, comprises the steps:

  • (1) prepare formwork, comprising;

    a. prepares corresponding wax-pattern, gating system, rising head according to the shape that will obtain charging turbine, and be bonded to wax-pattern group;

    B. properly mixed zirconium English powder is adopted, silicon sol, thin wood chip, n-Octanol, Leyden blue mix and blend obtains investment precoat, vermicelli sand after Wax-coated module, facing sand component is aluminum oxide sand and thin wood chip, and c. adopts properly mixed attapulgite powder, mullite powder, crop branch fiber, silicate hydrolyzate liquid mix and blend to obtain backing layer coating, hangs floor sand after Wax-coated module, rear slurry seal is dry for several times to repeat to hang floor sand, and d. dewaxing roasting obtains formwork.(2) alloying ingredient, described alloy comprises by the chemical composition of atomic percent;

    Al;

    40.0 ~ 43.0at%, V;

    0.6 ~ 1.3at%, Cr;

    0.4 ~ 1.6at%, Nb;

    2 ~ 6at%, B;

    0.2 ~ 0.8at%, C;

    1.0 ~ 1.3at%, all the other are Ti.(3) smelting and pouring, adds in the crucible of induction melting furnace by the alloy compositions described in step (2), is evacuated down to 10 -4pa;

    be blown into argon shield;

    load power to 350-400KW;

    after heating 20-25min, temperature arrives 1600-1800 DEG C;

    alloy material melts rear insulation 10 minutes completely;

    overturn crucible subsequently, in vacuum induction melting furnace, overturn crucible, aluminium alloy is poured in step (1) gained formwork. (4) be cooled to vacuum breaker after room temperature, formwork broken, obtains charging turbine.(5) charging turbine is heat-treated, after the operations such as surface sand-blasting cleaning, obtain finished product.

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