Casting Technology of Outlet Pipe of Diesel Engine

Abstract

The invention relates to a casting process for a water outlet pipe for diesel engines. The casting process is characterized in that the casting process adopts the following process steps: (1) the movable mold and the fixed mold of a front water outlet pipe section mold are heated, sprayed with release agent and closed for later use; molten aluminium is injected into the cavity of the front water outlet pipe section mold, so that a front water outlet pipe section casting is produced; the front water outlet pipe section casting is cooled in the cavity of the mold, the mold is opened, and the front water outlet pipe section casting is taken out; (2) the movable mold and the fixed mold of a rear water outlet pipe section mold are heated, sprayed with release agent and closed for later use; molten aluminium is injected into the cavity of the rear water outlet pipe section mold, so that a rear water outlet pipe section casting is produced; the rear water outlet pipe section casting is cooled in the cavity of the mold, the mold is opened, and the rear water outlet pipe section casting is taken out; (3) an external thread is turned on one end of the front water outlet pipe section, an internal thread is turned on one end of the rear water outlet pipe section, and the front water outlet pipe section and the rear water outlet pipe section are connected together, so that the water outlet pipe is produced. The structural shape of the water outlet pipe is more suitable for being produced by the casting process, and the difficulty of production is decreased.

Description

Technical field [0001] The invention relates to a water outlet pipe and its casting process, in particular to a diesel engine water outlet pipe and its casting process, and belongs to the technical field of diesel engine equipment. Background technique [0002] The water outlet pipe of a diesel engine is a component used in the cooling system of a diesel engine. The water inlet pipe of the radiator communicates with the water jacket of the cylinder head, and the water outlet pipe communicates with the water jacket of the cylinder block through a water pump. When the engine is running, the water pump circulates the coolant between the water jacket and the radiator, pumps the high-temperature coolant in the engine water jacket into the radiator to dissipate heat, and then sends the dissipated low-temperature coolant into the water jacket to continue to affect the engine Cool down. [0003] The outlet pipes on the market generally use gravity, low pressure, and sand casting processes...

AI Technical Summary

Problems solved by technology

[0003] The outlet pipes on the market generally use gravity, low pressure, and sand casting processes, but these casting processes have the following defects: 1. The appearance quality of the castings is poor, and the error of the blank size is large; 2. During long-term use, the sealing effect is not ideal , the production capacity cannot meet customer requirements, and leakage often occurs during on-line installation and engineering use; 3. The existing water outlet pipe is relatively long, with small ends and a large middle. complex

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