Preparation method of cupronickel strip for ship engine heat exchange

An engine and cupronickel technology, which is applied in the field of preparation of cupronickel strips for ship engine heat exchange, can solve the problems of serious peeling on the surface of the finished strips, affecting the use of domestic products, and failing to meet the comprehensive performance standards, so as to achieve the comprehensive performance of the strips. Superior, easy to mass industrial production, fine grain effect

Pending Publication Date: 2021-01-08
BAOJI TITANIUM IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Due to the limitations of the smelting process, the billet has defects such as looseness, inclusions, shrinkage cavities, and subcutaneous pores, which lead to serious peeling

Method used

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  • Preparation method of cupronickel strip for ship engine heat exchange
  • Preparation method of cupronickel strip for ship engine heat exchange
  • Preparation method of cupronickel strip for ship engine heat exchange

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Example Embodiment

[0029]The present invention will be further described in detail below in conjunction with specific examples, but the embodiments of the present invention are not limited thereto.

[0030]The embodiment of the present invention provides a method for preparing cupronickel strips for heat exchange of ship engines. The prepared cupronickel strips are 0.15×400×Lmm, 0.35×400×Lmm, 1.56×400×Lmm, and the weight of a single roll is ≧500kg. In the embodiment of the present invention, δ represents thickness, L represents length, and Φ represents diameter.

[0031]It includes the following steps:

[0032]Step 1: Mix the raw materials and the smelting additives according to the following weight ratios, where the raw materials include cathode copper, electrolytic nickel, pure iron, and electrolytic manganese; the smelting additives include: carbon powder, pure titanium, nickel-magnesium alloy, and boron-iron alloy; The proportion of each component is shown in Table 1. The total weight of each component of ...

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Abstract

The invention discloses a preparation method of a cupronickel strip for ship engine heat exchange. The preparation method of the cupronickel strip for ship engine heat exchange comprises the followingsteps: proportioning raw materials and a smelting additive according to a weight ratio; performing vacuum induction melting on the raw materials and the melting additive to obtain a first semi-finished cupronickel cast ingot; sawing the head of the first semi-finished cupronickel cast ingot, and baking in a resistance furnace to obtain a second semi-finished cupronickel cast ingot; performing electroslag remelting on the second semi-finished cupronickel alloy cast ingot, and cutting off a riser and the bottom to obtain a finished cupronickel alloy cast ingot; forging the finished cupronickelcast ingot in an electro-hydraulic hammer to obtain a first semi-finished cupronickel plate blank; performing hot rolling on the first semi-finished cupronickel plate blank, and then performing acid pickling and intermediate annealing, so as to obtain a second semi-finished cupronickel plate blank; performing cold rolling on the second semi-finished cupronickel plate blank to obtain a semi-finished cupronickel strip; and annealing the semi-finished cupronickel strip to obtain the finished cupronickel strip. According to the preparation method of the cupronickel strip for ship engine heat exchange, the defects of looseness, inclusion, shrinkage cavities, subcutaneous pores and the like of cupronickel are eliminated.

Description

technical field [0001] The invention belongs to the technical field of metal material smelting and processing, and in particular relates to a method for preparing a nickel-nickel strip for ship engine heat exchange. Background technique [0002] Ordinary white copper alloy (BFe10-1-1) has good corrosion resistance in clean or polluted seawater, which can avoid stress corrosion cracking and high temperature spot nickel removal. Because of this characteristic, white copper alloy (BFe10-1 -1) It is widely used in the field of heat exchanger equipment using seawater in power stations, desalination, petrochemical, ships, etc. The process flow usually adopted for this alloy strip is: one-time vacuum melting / non-vacuum melting→hot rolling / cold rolling Production→heat treatment→subsequent processing. [0003] Due to the limitations of the smelting process, the billet has defects such as looseness, inclusions, shrinkage cavities, and subcutaneous pores, which lead to serious peeling...

Claims

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Application Information

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IPC IPC(8): C22C9/06C22C1/03C22C1/06C22F1/08
CPCC22C9/06C22C1/03C22C1/06C22F1/08
Inventor 丁五洲程伟杨晗杨永石杨芙蓉郭建华丁清华杨晓荣樊志强
Owner BAOJI TITANIUM IND
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