JPS58217666A - Preparation of high strength and heat resistant aluminum alloy conductor - Google Patents

Abstract

PURPOSE:To prepare the titled conductor without lowering the strength and the conductivity thereof at all, by subjecting a roughly drawn wire comprising an Al alloy having a specific composition containing Zr, Fe, Si and one kind or more Cu and Mg to cold high surface reducing processing by a tandem mill for a wire material. CONSTITUTION:A roughly drawn wire comprising an Al alloy containing, on the basis of a wt%, 0.01-0.20% Zr, 0.07-0.80% Fe, 0.03-0.30% Si and one kind or more 0.005-0.5 Cu and 0.005-0.5% Mg and substantially comprising the remainder Al is prepared. In the next step, cold surface reducing processing of 60% or more is applied to the roughtly drawn wire by a tandem mill or a wire material. By this method, high strength and heat resistant Al alloy conductor enhanced in heat resistance and fatique resistant characteristics can be prepared without lowering the strength and conductivity thereof at all.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a high-strength, heat-resistant aluminum 9-mug joint conductor, which improves the heat resistance and 11g1 fatigue properties without reducing the strength and 44% of the special 52 J4 conductor. Same as above.

Conventionally, for the birth of a child, a core-adjusted aluminum FTK (ACdji) using A14 body and a lll1t Moku A1 go parallel yen made of A5-Zr as the king were used. Twisted @ (TAC! fj) has been used, but with the increase in demand for force in recent years, wB, @ note and strength conductor have become m, and m J-Z, r combined t. A high-strength heat-resistant AI composite conductor with improved heat resistance and strength has been developed,
Core^force l1lIt thermal aluminum stranded wire (ffi'l
'Ac5RJ and all-aluminum combined tray vC)≦Type 2' have come to be used. From the song about the RK near vomiting chest and the 44th Tsukiji site worker Tegoshi and public rose countermeasures, to the mountain FBH valley crossing, the strait til! The Aike ward, which has the longest span of 100,000 yen, has increased in size, and its maintenance has changed from internal employment to 1d, and it has become f2 so that long-term employment is desired. .

The present invention has 1tL6, 1+ of 4 simple silent A1 multiplexers.
As for the fatigue characteristics, there are two #IINs under the T7Ill construction conditions, and as a result of Kashira Kenshin, the conventional 4- or half-speed 41ft! High-strength ll11moku A1 gossako rough drawing wire formed by the Tozo rolling method, the rolling method, and the Okidehoji method is subjected to cold wire drawing.

In the cross section of the processed material, the working hardness 11Z at the outer periphery and the center becomes unrestricted, and the mechanical properties on the day of cutting become unsuitable.
As a result, the fatigue property of the wire rod becomes low F, and when continuous elongation is carried out, the processing heat generated when passing through the valley die is gradually accumulated, and the wire rod 1/f increases considerably, so-called Low tM leakage causes 4 hardened lumps, and the
It was discovered that it lowers the heat resistance and promotes the low F of the fatigue resistance characteristics, and as a result of historical studies, it was found that the heat resistance and fatigue characteristics were improved without significantly lowering the strength and 444 of the conductor. Manufacture of high-strength heat-resistant aluminum composite conductors
! This is one shot of 5.

That is, non-invention is Zr 0.01-0.20WI%Od
'F wt% is simply % gd 42 Truノ, b' e
O, 07~0.80%, δmu(J, 03~0.30%
Y containing A, CuO, 005~0.5% father/and Mg
0,005~t), 5% K, remaining aluminum and woven impurities, an aluminum 9mm joint rough drawing machine is processed to reduce the area by more than 60% using a tandem rolling machine for wire rods at P7Id. This is a characteristic feature.

In the present invention, the composition of one basin is determined as described above based on the following equation.

Z is added to raise lil+1 heat resistance by one level, but if its content is less than 0.01%, heat resistance and heat resistance will not be sufficient, and if it exceeds 0.8%, heat resistance will be sufficient but conductivity will be poor. This is because the rate t' reaches a low value. i! 1e is added to increase the strength by one level, but Jf:
If the content and negation #i is less than 0.07%, the strength will not be maintained, and if it exceeds 0.8%, the same effect on strength will not only be a side effect.

This is due to the relatively low FT6. In addition, 81 is tm /JfJ T in order to make 1 degree the same as above in history, but its content is 0. If it is less than '03%, the effect is 4%.
This is because if you add 1 to 0.30% without c, you can clearly sharpen the 4-tei.

Cu and/or Mg are added to increase the strength of the skin, but the effect of either of them is 0.00
If it is less than 5%, the effect will not be as good, and if it exceeds 0.5%, not only will the 4i4tk FT be low, but the bending performance will be poor.
It becomes easy to break, and the 4 & d two-pronged chapter is removed.
This is for the sake of two things.

The present invention is based on the above dd4i1tJ! i. The aggregate of the range is roughened by continuous or semi-continuous compression method, malleability, extrusion method, etc., and the area is reduced by 60% or more by tandem rolling A for wire rod in cold Im. Do the processing #! It is something that is used as a body.

Tandem rolling for A41 refers to Nigar rolls or three-way rolls ft value a-, which are generally used for # side circular I/rk finished products' Generates less Roe heat and uniformizes the mechanical properties of the processed wire when bending. Therefore, the rise of the wire rod during processing is small, and in order to prevent the occurrence of low 1 smoke pure hardening, the heat resistance of 4 degrees is reduced. Also #material &#ilj
[Since the unsightly characteristics at + change to 9-, the conductor's unsightly characteristics are reduced to T as above. However, due to the accuracy of tandem rolling for rolled wood, 6
The reason for performing line-to-line processing of 0% or more is to reduce the strength of the conductor compared to J Roe hardening No. 2, and with a 60% hardened wire, sufficient GI cannot be obtained with Roe.

1. If the wire rod during rolling becomes 15L)℃ or higher due to tandem rolling for fly material, Soripur Yuera's N
Cool the material for 1 hour using an aerosol, and heat the material being processed into the skin to 150C or higher, or 100C or higher for flies. In addition, in order to make the dimensional bulk of the 4 pieces of rolling products the same, it is necessary to add 5 to 40% to the wire rod after rolling by 1 bath.
It is advisable to perform a certain degree of crimping.

Hereinafter, the F1 invention will be explained with regard to the license fee.

Melt 99.8% pure metal and add Amu-5 Ming Zr to it.

A1-6%i11e, person 1-20%8i, Al-5
% eu cD base and mg alone were added to the sub-base of the plants, and an aluminum tray with a composition of s1, table d, and T was welded.

Belt Ant Wheel 'J, 44! Due to the production loss, 11# blocks with a sprouting area of 20UOd were continuously left behind, and from the 1 round rolling certainty 1, only 9.5 jg (JJ
I made it a rough line. This rough drawing line No. 11 is rolled by a tandem rolling mill using rolls to form a conductor k! 1114
L z *Tensile strength, 44%, 1 for these 4 pieces
a1 Improved silence and fatigue strength. The results of this life and the manufacturing conditions are shown in Table 2.

For comparison, rough drawing 4Ilj! Two conductor sheets were manufactured by the conventional method of stretching on a stretching machine using 1IiA dies, and their 1118 strength-4441, heat resistance, and fatigue strength were measured. The results of this test and the ring conditions are included in Table 2.

Is the tensile strength Amsler type tensile test llA? 444! The nausea resistance was constantly determined using the Kelvin double bridge. Also, the heat resistance is 1 hour at 230'C! The tensile strength after heating was determined and expressed as a sub-table against the tensile strength before heating.

Fatigue strength was measured using Nakamura type 411ii material rotating bending limb strain test.

Fatigue #i stress (limit 11i of stress that can withstand # limit repetitions)
) was sought.

Table 1 Table 41 The solid combing trays A-)' are all duplicate keys with a composition of 41 yen as defined by the uninvented method, and the comparative trays G and h are outside the composition range specified by the uninvented method. It is %2nd
As is clear from the table, the conductors processed by the invention method A to A are 11II "remo tensile" 23.8/
- or above, 444155.0%lAC3 or above, heat resistance 93
．． 2% or more, fatigue strength 7.8/- or more characteristics fL,
Unfinished Ming Wanxin 41, conventional methods and uninvented methods/I6
4 and the conventional method, it is clear that the 4 RC bodies processed by the uninvented method have the same tensile strength and #4 ratio as the 4 bodies processed by the conventional method, and are more custom-made. The resistance to wear and tear is 1 inch (nT).

Also, as is clear from Comparison Method/I67 and Hiroshima 8, it is prescribed as a non-inventive method. Even if the joints U and d, which are different from t11, are processed by an uninvented method, in the composite G, the tensile A and fatigue are 1 degree, and the result is 1 unit f-i - (: t! $ 4 and fatigue It can be seen that the strength is low.Also, as is clear from the comparative method/i69, if the uninvented method is lower than 60% on the composition axis defined by the uninvented method, the tensile strength is A. It can be seen that the fatigue strength is low.

In this way, by using an uninvented method, it is possible to improve the strength of the aluminum conductor without significantly lowering the strength of the aluminum conductor.
Same as above for I@ sex and WJIi wave characteristics, Jl! As a twist resistance for long diameter IW (incl.

Claims (1)

[Claims] ” '0.01~(L20 w 1%, '1.07
~0.80wt%, dio, 03~0.30wt%, Cuα[105~0.5wt% or/and MgO
,005~g, 5wt%, aluminum composite rough drawing wire made of lAmA1 and normal impurities is processed to reduce the area by 60% or more from tandem pressure cap 1 for line attachment between floors. Method for manufacturing Karasukaro Muraguro Aluminum Kai conductor.