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Corrosion resistant cupronickel alloy material for plate heat exchanger and processing technique thereof

A plate heat exchanger and processing technology, applied in the field of non-ferrous metal processing, can solve problems such as high cost, difficult processing, and resistance to high chloride ion corrosion, and achieve low cost, good deep drawing performance, and easy control of the processing process Effect

Active Publication Date: 2008-01-09
中铝洛阳铜加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the alloy materials used before are stainless steel, pure titanium, nickel and nickel alloy materials, all of which have defects such as high cost, difficult processing, and resistance to high chloride ion corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: 0.4×300×500 mm corrosion-resistant nickel-nickel alloy strip coil for plate heat exchanger

[0031] Use power frequency cored induction furnace to smelt in the atmosphere, and make ingredients according to the proportion of ingredients: Ni9.0%, Mn0.5%, Fe1.0%, the balance of Cu and the total amount of impurities ≤0.7%, and the addition of rare earth additive Ce0 .1%. Feeding sequence: old alloy material + pure copper→Ni→Fe→covered charcoal→Mn→Ce, add deoxidizer: Mg, finally add modifier: Ti, melting temperature: 1200℃; vertical semi-continuous casting, casting Temperature: 1150°C, casting speed: 2.0m / h, mold cooling water pressure: 50KPa; heating adopts a walking furnace, heating temperature: 850°C, heating time: 3 hours; annealing is divided into: intermediate annealing and finished annealing , heating temperature for intermediate annealing: 600°C, holding time: 4 hours; heating temperature for finished annealing: 600°C, holding time: 3 hours; pre-finishing...

Embodiment 2

[0032] Example 2: 8.5×1000×3000 mm corrosion-resistant white copper alloy strip for plate heat exchanger

[0033] Using power frequency cored induction furnace for smelting in the atmosphere, the ingredients are prepared according to the proportion of ingredients: Ni11.0%, Mn1.0%, Fe1.8% and the balance of Cu and the total amount of impurities≤0.7%. Feeding sequence: old material of this alloy + pure copper→Ni→Fe→covered charcoal→Mn, add deoxidizer: Mg, finally add modifier: Ti, melting temperature: 1500℃; vertical semi-continuous casting is adopted, casting temperature: 1450℃, casting speed: 4.5m / h, mold cooling water pressure: 300KPa; heating adopts walking furnace, heating temperature: 1100℃, heating time: 6 hours; annealing is divided into: intermediate annealing and finished annealing, Heating temperature for intermediate annealing: 850°C, holding time: 10 hours; heating temperature for finished annealing: 850°C, holding time: 6 hours; processing rate of pre-finishing and...

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Abstract

A corrosion-proof German silver band for plate heat exchanger and its production are both disclosed herewith. It contains (wt%): Ni 9.0-11.0, Mn 0.5-1.0, Fe 1.0-1.8, Ce 0.05-0.2, and waste Cu alloy with Cu balanced, and with impurity not more than 0.7. It is produced by: weighing, smelting, casting, hot rolling, end-surface milling, primary rolling, inter-annealing, cold rolling, inter-annealing, edge cutting, pre-rolling, inter-rolling, fine rolling, final annealing, surface treating, cutting, and packing. It is of size (0.4-8.5mm)X(300-1000mm)X(500-3000mm), performance of Rm not less than 320MPa, A11.3 not less than 30%, Hv1 not less than 85, grain 0.015-0.045mm, and Ra larger than 0.2um without scratches, and can meet demands of PHE and bactericidal washing machine.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal processing, and in particular relates to a corrosion-resistant white copper alloy material and a processing technology for a plate heat exchanger. Background technique [0002] At present, the plate heat exchanger (PHE) has become an efficient and compact heat exchange equipment, and is widely used in industrial heat exchange fields, such as seawater desalination, coastal aquaculture, geothermal, urban sewage treatment, etc. In addition, due to the harsh working environment of the washing machine, the key internal materials are required to have good corrosion resistance while maintaining a certain strength and wear resistance. Most of the alloy materials used before are stainless steel, pure titanium, nickel and nickel alloy materials, all of which have defects such as high cost, difficult processing, and resistance to high chloride ion corrosion. Contents of the invention [0003] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C1/02C22C1/06B22D21/00C22F1/08
Inventor 娄花芬马可定黄国兴叶成效高双玲路俊攀蒋长乐陈少华刘富良韩卫光
Owner 中铝洛阳铜加工有限公司
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