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Annealing process for comb teeth of turbonator

A technology of steam turbine generator and annealing process, which is applied in the field of comb tooth annealing process of steam turbine generator, which can solve the problems that the design requirements of comb teeth cannot be guaranteed, the strength and hardness decrease, and the heating of materials is not uniform, so as to achieve the guaranteed strength And hardness requirements, accurate annealing temperature, uniform heating effect

Inactive Publication Date: 2016-07-20
HARBIN ELECTRIC MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This heating method leads to uneven heating of the material, large deformation, greatly reduced strength and hardness, and cannot guarantee the performance required by the design of the comb drawing.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] A kind of steam turbine generator comb tooth annealing process, its process steps are as follows:

[0017] 1) Cutting material: H70-Y2 semi-hard copper plate is selected as the comb material, the thickness is 2mm, and the length is according to the requirements of the drawing;

[0018] 2) Furnace loading: use a well-type resistance furnace with a fan for annealing, put the combs vertically into the heat treatment hoisting tool basket after unloading, put the furnace temperature below 150°C into the furnace, and hoist the tool basket into the heat treatment furnace;

[0019] 3) Annealing: the comb teeth are heated to 420°C±10°C with the furnace, and then kept for 1 hour, then taken out of the furnace and cooled to room temperature in the air;

[0020] 4) Machining: After annealing, it is processed into the size required by the drawing;

[0021] 5) Bending: The comb teeth are bent on a special bending tool.

[0022] By completing the above process content, the heat trea...

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Abstract

The invention discloses an annealing process for comb teeth of a turbonator. Materials of the comb teeth, an annealing method, annealing process parameters and a comb tooth production procedure conducted after annealing are stipulated in the annealing process; and the annealing process is implemented according to the stipulation so that it can be guaranteed that the product quality of the comb teeth meets the requirement of a design drawing.

Description

technical field [0001] The invention discloses a comb-tooth annealing process of a steam turbine generator. Background technique [0002] The comb teeth of the steam turbine generator are installed in the oil retaining cap, and the oil retaining cap mainly relies on the comb teeth to retain oil. The comb teeth are in contact with the high-speed rotating rotor, and the gap with the large shaft can form a seal to keep oil out, so the comb teeth are required to have a certain strength and hardness. The comb teeth are made of H70-Y2 semi-hard copper plate with a thickness of 2 mm. The front end of the comb teeth is only 0.3 mm thin and the width is 10 mm. [0003] Comb production process route is: blanking - annealing - machining - bending. [0004] Due to the hard material of the steam turbine generator comb, it is difficult to bend after processing, so it has been heated by acetylene flame spraying. This heating method leads to uneven heating of the material, large deformat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/08
CPCC22F1/08
Inventor 张立娟刘毅葛光男
Owner HARBIN ELECTRIC MASCH CO LTD
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