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Gearbox for ship

A technology for gearboxes and ships, applied in the field of gearboxes, can solve the problems of dependence on imports, low domestic matching rate of marine gearboxes, weak independent research and development capabilities, etc., to achieve good tensile strength, increase corrosion resistance and oxidation resistance. Ability, Strength-Increasing Effect

Active Publication Date: 2017-01-11
南京创贝高速传动机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In order to promote the comprehensive level of the design and manufacture of civil and military ships in our country, relevant state departments have vigorously supported the design and production of ships and their key accessories in recent years, which has greatly promoted the development of the ship key accessories market. my country's marine gearbox technology is still imported from abroad in the 1960s and 1970s. The independent research and development capabilities are relatively weak, and there is still a certain gap with the world's advanced level. In my country's shipbuilding production, the domestic matching rate of marine gearboxes is very low. In particular, high-power marine gearboxes are still mainly dependent on imports, and the serious phenomenon of "ships waiting for machines" often occurs;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides a gearbox for ships. The gearbox body includes the following components in terms of mass percentage: C: 0.20%, Si: 3%, Fe: 0.6%, Mg: 5%, Zn: 0.5%, Mn: 0.1%, Cr: 0.4%, Ti: 0.08%, Ni: 0.8%, Nb: 0.02%, V: 0.01%, Cu≤0.2%, P≤0.03%, S≤0.02%, rare earth: 0.01%, The balance is Al;

[0039] The composition of the rare earth in terms of mass percentage The chemical composition is: La: 18%, Sc: 12%, Y: 15%, Sm: 21%; Nd: 18%, Ce: 5%, Gd: 11%, the above components The sum is 100%;

[0040] The gearbox housing for ships is prepared according to the following steps:

[0041] (1) Use molding sand and core sand as molding materials to make a gearbox box mold for ships. Before making a mold, the molding sand in the molding material is placed in an oven for drying;

[0042] (2) Heat and smelt the various components of the ship’s gearbox box. After all the components are melted, the raw material liquid will be obtained. The temperature will be raised to 650°C for 20 minu...

Embodiment 2

[0054] This embodiment provides a gearbox for ships, C: 0.23%, Si: 5%, Fe: 0.8%, Mg: 7%, Zn: 0.8%, Mn: 0.3%, Cr: 0.6%, Ti: 0.13% , Ni: 1.0%, Nb: 0.04%, V: 0.03%, Cu≤0.2%, P≤0.03%, S≤0.02%, rare earth: 0.04%, the balance is Al;

[0055] The composition of the rare earth in terms of mass percentage The chemical composition is: La: 22%, Sc: 11%, Y: 15%, Sm: 20%; Nd: 18%, Ce: 6%, Gd: 8%, the above components The sum is 100%;

[0056] The gearbox housing for ships is prepared according to the following steps:

[0057] (1) Use molding sand and core sand as molding materials to make a gearbox box mold for ships. Before making a mold, the molding sand in the molding material is placed in an oven for drying;

[0058] (2) Heat and smelt the components of the gearbox box for ships. After all the components are melted, the raw material liquid will be obtained. The temperature will be increased to 720°C for 230 minutes, and then to 780°C, and the rotary degasser will be used with pure argon. Ref...

Embodiment 3

[0070] This embodiment provides a gearbox for ships. The gearbox body includes the following components in terms of mass percentage: C: 0.21%, Si: 4%, Fe: 0.7%, Mg: 6%, Zn: 0.6%, Mn: 0.2%, Cr: 0.5%, Ti: 0.09%, Ni: 0.9%, Nb: 0.03%, V: 0.02%, Cu≤0.2%, P≤0.03%, S≤0.02%, rare earth: 0.03%, The balance is Al;

[0071] The composition of the rare earth in terms of mass percentage. The chemical composition is: La: 19%, Sc: 13%, Y: 16%, Sm: 20%; Nd: 18%, Ce: 5%, Gd: 9%, the above components The sum is 100%;

[0072] The gearbox housing for ships is prepared according to the following steps:

[0073] (1) Use molding sand and core sand as molding materials to make a gearbox box mold for ships. Before making a mold, the molding sand in the molding material is placed in an oven for drying;

[0074] (2) Heat and smelt the various components of the gearbox box for ships. After all the components are melted, the raw material liquid will be obtained. The temperature will be raised to 690°C for 20-3...

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PUM

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Abstract

The invention discloses a gearbox for a ship. A box body of the gearbox comprises the following components: C, Si, Mn, Fe, Mg, Zn, Mn, Cr, Ti, Ni, Nb, V, Cu, P, S, rare earth and the balance Al. The gearbox disclosed by the invention is high in strength and hardness, is good in wear resistance, corrosion resistance and oxidization resistance, and is high in yield strength and tensile strength; and a processing method for the gearbox is simple, is low in cost and is good in formability.

Description

Technical field [0001] The invention relates to a gear box, in particular to a gear box for ships. Background technique [0002] In order to promote the comprehensive level of design and manufacturing of China's civil and military ships, the relevant state departments have strongly supported the design and production of ships and their key accessories in recent years, which has greatly promoted the development of the market for ship key accessories. Nevertheless, China currently adopts The marine gearbox technology of China is still imported from abroad in the 1960s and 1970s. The independent research and development capability is relatively weak, and there is still a certain gap with the world advanced level. The domestic matching rate of marine gearboxes in China’s ship production is very low. In particular, high-power marine gearboxes are still mainly imported, and the serious phenomenon of "ships waiting for aircraft" often occurs; [0003] Marine gearbox is one of the necessa...

Claims

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Application Information

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IPC IPC(8): B23P15/14
CPCB23P15/14
Inventor 陆树根
Owner 南京创贝高速传动机械有限公司
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