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method for manufacturing Cu-Ni-Sn-Sn alloy and cooler for Cu-Ni-Sn alloy

A cu-ni-sn, manufacturing method technology, applied in the field of coolers, can solve the problems of unsuitable multi-variety production, etc.

Active Publication Date: 2021-10-01
NGK INSULATORS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since this method produces ingots completely continuously, it is excellent in mass production of ingots with a certain composition, quality and shape, but it is not suitable for the production of various varieties.

Method used

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  • method for manufacturing Cu-Ni-Sn-Sn alloy and cooler for Cu-Ni-Sn alloy
  • method for manufacturing Cu-Ni-Sn-Sn alloy and cooler for Cu-Ni-Sn alloy
  • method for manufacturing Cu-Ni-Sn-Sn alloy and cooler for Cu-Ni-Sn alloy

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0041] example 1 (Compare)

[0042] As a Cu—Ni—Sn alloy, a Cu—15Ni—8Sn alloy specified in UNS: C72900 was prepared and evaluated by the following procedure.

[0043] (1) weighing

[0044] A pure Cu nugget, a Ni matrix, a Sn matrix, electrical manganese, and Cu—Ni—Sn alloy scrap, which are raw materials of the Cu—Ni—Sn alloy, were weighed so as to have a target composition. That is, 163 kg of Cu, 30 kg of Ni, 15 kg of Sn, and 1450 kg of Cu—Ni—Sn alloy scrap were weighed and mixed to prepare them.

[0045] (2) Melting and slag treatment

[0046] The weighed raw material of Cu—Ni—Sn alloy was melted at 1200 to 1400° C. in an atmospheric high-frequency melting furnace, and stirred for 30 minutes to homogenize the components. After the melting is completed, slag scraping and slag scooping are carried out.

[0047] (3) Composition analysis (before casting)

[0048] A part of the Cu—Ni—Sn alloy obtained by melting and slag treatment was collected as a sample for component anal...

example 2

[0062] Instead of water cooling in (5) above, preparation and evaluation of samples were performed in the same manner as in Example 1 except that spray cooling was performed as follows. The size of the obtained cast product was 320 mm in diameter x 2 m in length.

[0063] (5') cooling (spray cooling)

[0064] Such as figure 1 As shown schematically, the solidified ingot 16 is continuously drawn out while blowing mist water through the cooler 18 provided directly under the mold 12 . At this time, 7 to 13 L / min of water W is dripped from the water supply part 18b located on the upper part of the cylindrical main body 18a of the cooler 18, and the water W from the cylindrical main body 18a provided on the cooler 18 as the air injection part 18c The downstream 120 holes with a diameter of 3.5 mm are blown with air A at a pressure of 2.7 to 3.3 MPa, thereby atomizing the dripped water W to form mist water (that is, spray), and blowing it to the ingot 16 . In addition, the ingot ...

example 3

[0065] Example 3 (Compare)

[0066] Instead of spray cooling in (5) above, preparation and evaluation of samples were performed in the same manner as in Example 1 except that air cooling was performed as follows. The size of the obtained cast product was 320 mm in diameter x 2 m in length.

[0067] (5") cooling (air cooled)

[0068] The solidified ingot was continuously extracted while blowing air through a cooler installed directly under the mold. At this time, air was blown from 120 holes with a diameter of 3.5 mm provided in the cylindrical main body of the cooler, and the ingot was lowered while receiving it on a receiving table that lowered at 25 mm / min. By such a cooling method, after the semi-continuous casting of (4) above, the ingot was cooled to 50° C. over 12 hours. In the case of air cooling, since the cooling rate of the ingot is slow, internal cracks hardly occur, but it takes a long time for cooling, so it can be said that productivity is poor.

[0069] In...

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Abstract

The present invention provides a method for manufacturing a Cu-Ni-Sn-Sn alloy and a cooler for the Cu-Ni-Sn alloy by reducing internal cracks while shortening the cooling time of the casting block, thereby giving consideration to productivity and quality. A method for manufacturing a Cu-Ni-Sn-Sn alloy is a method for manufacturing a Cu-Ni-Sn alloy using a continuous casting method or a semi-continuous casting method, comprising: flowing a molten Cu-Ni-Sn alloy into one end of a casting mold open at two ends, solidifying a portion near the mold of the alloy, and continuously extracting as a casting block from the other end of the mold.; and a step of cooling the drawn liquid by blowing the mist-like liquid to the extracted casting block to produce a cast product of the Cu-Ni-Sn alloy.

Description

technical field [0001] The present invention relates to a method for producing a Cu-Ni-Sn alloy and a cooler used therefor. Background technique [0002] Conventionally, copper alloys such as Cu—Ni—Sn alloys have been produced by continuous casting or semi-continuous casting. The continuous casting method, like the semi-continuous casting method, is one of the main casting methods. It pours molten metal into a water-cooled mold and makes it solidify continuously, so that it can be cast as an ingot of a certain shape (rectangular, circular, etc.). Pulling out, and pulling out downwards is more common. Since this method produces ingots completely continuously, it is excellent in mass production of ingots having a certain composition, quality, and shape, but is not suitable for the production of various types. On the other hand, the semi-continuous casting method is a batch-type casting method in which the length of the ingot is limited, and the type, shape and size can be ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/124C22C9/06C22C9/02
CPCB22D11/004B22D11/1245B22D11/1246C22C9/06C22C9/02B22D11/225B22D11/049
Inventor 石井健介
Owner NGK INSULATORS LTD
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