JPS5947078A - Zirconium clad steel - Google Patents

Abstract

PURPOSE:To obtain zirconium clad steel which is excellent in joining force and bending workability even after hot working and heat treatment, by joining as one body at least one layer of a clad material to at least one layer of a base metal through a medium contact material layer, by a well-known method. CONSTITUTION:Three layer clad steel 5-A is obtained by welding with pressure simultaneously three, namely, one layer of a zirconium clad material 1-A and one layer of a carbon steel or low alloy steel base metal 3-A through coupling with a medium contact material layer 2-A selected from niobium, a niobium alloy, tantalum and a tantalum alloy, by a well-known explosion press-contact, etc. Subsequently, thin three layer clad steel 5-a is obtained by hot-rolling the three layer clad steel 5-A. Also, clad steel 8-A is obtained by using the thin three layer clad steel 5-a as an intrmediate layer, interposing its layer between a clad material zirconium plate 1B and a base metal steel plate 3-B, and joining simultaneously a zirconium plate 1-a of the thin three layer clad steel 5-a and the clad material zirconium plate 1-B, and a steel plate 3-a and the base metal steel plate 3-B, and thereafter, by rolling it, a clad steel plate 8-a of prescribed plate thickness is obtained.

Description

Detailed Description of the Invention The present invention provides excellent bending workability with a strength of 18 to 1, even after undergoing heat treatment, etc. during manufacturing, or after undergoing heat treatment etc. after manufacturing. This company is involved in Zir-1 clad steel.

Zirconium clad steel (j5, excellent/=corrosion resistance 1'l
, 111 Zil'nium or Zil'nium alloy with thermal properties are removed, and each 144 is carbon ilI! It is a clad steel with low kumquat content and is used for various purposes.

In addition to the conventional 75-layer method of manufacturing Kumclad steel, Kintei Jiruni now offers 1" - 1" C.O.D. method.

1111 research on diffusion bonding method etc. is progressing (ν).
For example, roll pressing 1 method C produces brittle 4j intermetallic compounds during hot rolling, and the bonding strength 1α cannot be improved.し／、: There is a way to insert intermediate junction (4) using a BJ shrine, but it is still at the stage of prototype production of a small chair.
It takes a considerable amount of time for it to be officially adopted.

Therefore - C1 present (1 is a big outburst month 2nd person [Koyoru Jill -
1. Only Ni-clad steel is a chemical equipment shrine with species/7.
It is frequently used as 1.

1st month i'17
People (3, J, Rujil-I-Ramkurat 411m, and the relics are 4).
m++ 1-016. H Goya), 11 n 1! J Hei area is approx. 1ol)X! i (10 mIllI me top yell good I L pressure stone gong \10 is 1゛, this is changed 1-li
To do this, 1911 Lf, "1.'l 1ii
lflit! J4-40 IG: i The θ11 shown on the bow hat Jill: J ''l' Between the tsumu and the son-in-law, there is a middle soot-like layer 4 of a good f tongue plate with 41 degrees of 111 interposed between them 9.! ;l: By pressing down, ii
4>Good (/cr: fJ arrival/J<1':iRare?> J, 5 M f, r -)/j Not only that, I's 1 porridge fruit, experiment (Pa is 1.'1 Mikisho 1
14-4GIG No. 3 using the method of Jill=-2 ""
/ /-＼Riichi-nod steel (Ii C is rough hot-worked steel.
1-', heat treatment or heat treatment (1-')
The bad f-Tan no Tsuki-N1 Hirome-kyo has deteriorated to a certain extent-) Missing 1:, Heading j/j,.

Of course, it's natural that Sill' Niuno\ and the steel directly
11. Apply a total force of 1 inch to the second part of the heat treatment tube.
It turned out to be 1.

This decrease in bonding force is due to hot heating] 191 411 interdiffusion occurs between the components and a hard and brittle intermetallic compound is formed (1).

These crat steels have a phase D-fla, i'l
As a way to solve the problem of Q - C is to add this to F between the two layers.
In addition to the diffusion bonding method described above, methods for manufacturing multi-layer clad steel with a 1° soot-like hole inserted are generally used. ”-le 11 cash on delivery, bath 0
=1 method, Metsu-1-method A1, etc., but for dill-1 nium clarat steel, as shown in the previous) 4j, at present,
Only the explosive crimping method is commercially available.

However, this 9. V light ILf', f', i method (ko J,
For example, commercially available Zil-1 Ni-1\ plate is about 1. hll and more ＼"law's 5 ft. The shrine is on the lifting platform of 1 pickpocket (yo i Regarding aluminum clad steel sheets, it was not possible to meet market demands.

In order to defeat this lawsuit, a method was attempted in which a wide and long zirconium clad steel plate was hot-rolled (11). For example, one person who filed the application first applied for the application.
In the invention of Publication No.-53888, +r of the phase n diffusion
:+! The fact is that it solves two problems at the same time: i'm and wide+i+katsu;
The method was invented, and the name of the invention is this defense σ
) 7"J > h Iko (1'L tsute zil")Nium Clad Steel Experiments 11 1ko/J(ifii I can add le Ii!
i M retired @'('j Rukotka CN 'J 7J' TsuA2.

'J'J Wara, Kono 5f,, nJI F t;L
First Su All D-411, tts ('LIVi +1 valid for
Press the metal 1/1 of gold, metal, silver, etc. and steel -1, and then hot-roll this crat steel to form the metal 11A and the required amount of metal 1i, j. 1. υ month - extended, next (, -
Ini's Is, <Masuzuki Nobu Krat' tM + and gold phase and +ql between 44 & 111 and (intermediate sooty moon doji - (
Intervention (■sa【!, conventionally known! 17 catties It', (
,), after the explosion occurred, it was extended to 12 to 1i (by ?t9?t9).

It is written in an attempt to obtain.

However, the method of JP-A-5G-53888 cannot be applied to zirconium cladding (14i).
1. 1)'L joint strength after 11" hot rolling is fit
The fact that -C bonding strength 1; t-).

Su'cK 4) Chi, the sooty) Aguarunirakuru, 1.
Sooty metals such as liveden, platinum, gold, silver, etc.
It was found that the welding ability during rolling was not sufficient (l, 2).

In order to improve the shortcomings of this 4I and zirconium Kunot 3H, Ill+
7) ('1 shot 1] Shield, hot rolling, heat treatment, etc. 0 articles fl
1. D, 'j'll--after this J month J thing 111
Test ζ゛ quality of 5'l'1IIl+'i repeated experiments, -) Ini tree 5τ; brightness was reached cJ.

According to the present invention, the at least one layer of di-1 nium is a metal junction material layer selected from -A, di-A, tantalum, and tantalum alloys. Through which bond is C1 reduced and made of J steel or low alloy 1'i4/? A sill formed by integrally bonding with a J layer: 1 Ni-clad steel and a J5 layer consisting of at least one zirconium layer, and an auxiliary intermediate soot-like layer such as titanium (through one layer, further two A) , 2, T 7 alloy, tantalum, tantalum alloy) A soot-like 4A layer (from tantalum alloy) is integrally joined with at least one layer of carbon steel or 1!l layer from low alloy steel through any one of the layers. Tenaru Sil:
6 related to 1Nium clad steel.

Here, the Jill'niulX shrine used in the present invention is A S
T' M, 13-352.13-493" T varnish retained 7r- It is often referred to as sill concave two l\plate.The phase adjustment is Ss ki, S 13, and 3 as specified in JIS.
M month, S U S ) t A O J, and these are U J° 1st step) 1 steel (1 round is low alloy steel etc.

In addition, C with a thickness of one sooty layer is l-;:1 thickness (
・((Rudo welding / 11! 11 is a clad steel (tli /, 2 inconveniences 4. ζ may occur, and wood 'J1. There is an expensive metal C, and the parts used are (1 < 111i 4i'i (1) and the minimum thickness required. There is a hesa C that can be pressed down.

8Fk in history, this soot-like (A Ii"i's 1'7 is f from the proximity of diffusion prevention) several t1m <> I and several lI I
lla:lt1. (There is sufficient C, hot rolling 41 j,
The final (-1 tenth I7,1 the thickness of (two thicknesses J'-L)
Jul:: The explosion pressure is 1" 1st grade/I" 3J, 1. i, : 3i [front one; r tsul” l”l (
1) Condition ′cO)! A! Jr.

The above description will be explained in detail with reference to the drawings based on the Schill-1/Cladd's law of the present invention.

To Figure 1 (A), (/\) is '1', 'eye 1' of E5 color light.
1 Item range No. 1 Sill described in J11: 1 Nimium clad steel
Do1 △ is sill 1-ram temporary, 2 Δ is intermediate welding material, go3
−△ is a steel plate (there is one).

Intermediate welding material? -△ is "Jill" Niu IX provisional 1. △Do steel plate 3
- A between C' brittle < Z generates intermetallic compounds U, Ij
& ductile (metal C) is required to be (1
As a result of the 11th study, ``Nii-Yo Tsumugi 2 A-no, Nb-'171゛,
Nl) -T! l, j Which -A/' alloy, ((Ui is industrially pure tantalum, ia -IJb, -1-a
-1'i41Which tantalum alloy is the best?

Jill] Niu l\Ilj 'I -A, intermediate welding material 2-△
.

The steel plate 3-△ is joined by a known person (
+, j) Three-layer crat steel 5-△ as shown in the figure.

This bonding can be performed, for example, as shown in many documents such as
The 'q''r method is preferable, but for example, JP-A-Sho! □IG
-128July 1. The conventionally known diffusion bonding method shown in many documents, such as the conventionally known rolling loaf deposit 4T and 11μ 1' method, uses 11 pins for bonding.

J station building 1. L,
5't, 1f=11) No.3-A etc. intermediate welding material: 2-
3. Press A with explosive pressure, and then expose one portion of Ifyl-8 to the intermediate soot-like + A2-A surface. 3
There are some people looking at the light pressure on the 3rd layer 4 and 11"I, but there are 1 and 2 people on the back right. \Plate 1 △Do scale 1 (anti-3 Δdoσ) between moon,
1; both 11) are involved in gold 11, which is easy to activate. As for the whiteness of each layer, the fill IPi is 1, and the loss of 110 is t.
f'% Wl 'Ten is good.

J
, As shown in the diagram, these three layers [J/Z,
1-a, 2-a, 3-a and C1 are extended, thin wall 31 + pie i
Crackl" 8ff board;]-a by 1!l.

0) during hot rolling (1) II-lower tri (I
i-t previous tt2 tlr 41y l', difference of 1, 1
J to Wangen, temporary jB7 decrease suspension) i, 1. Tsujinobu temperature, 1
Rolling capacity 4f Which rolled strip 1'1 J,';':! I'shi is (1 ruru 1゜In the existing equipment C, the maximum is considered to be the monthly suspension, which takes about 1/100th of the root thickness, and the minimum j [upper suspension 1.1 For example, consider the case of 1 + jt + 3y joint. In other words, the case of Q o is equal to λ.

A RIIIJ c, = +13i (' IJ Ti'
, -F' hi ha41'j (ko limited shi ZC ii.

In this way (](it1)
The ID steel plate is a side W surface joint work 1m and a tune tJ" +11
It was confirmed that it had a 1-1- property.

Furthermore, this J is 1q and I is 1t (I plate <
I Ws Zil'nium clad steel plate 5a is used as the intermediate layer,
0 layer between the aluminum temporary 1-13 and f1 steel plate 3-13 and the conventionally known method, for example +, 1”-J for crimping, etc.
Zirconium of 3-layer thin plate rad jN plate 5-a, plate 1
-a etc. 4ΔGiroux 1-Non AI -, [3 and Hitl
The '4 plate 3-a and the rV1 shrine 3-B can be joined to '#1, respectively.

For the 8th case of 1q of 1st item, we joined 3 layers of thin plates 1 to 5-a to the base material 8N plates 3 to 13, and then welded the composite material on top of A.
Although there are methods of bonding Ni-11, it is more efficient to bond all three at the same time.

(E) Figure 31 shows the state of the clad steel ε3-Δ of the joint 19.

Next, we decided to roll this clad steel 8-△.
\) is 1←2. -a. The moon at this time”・jii 1.
1.171 to 1 (+4 not fixed.

Zirconium undergoes a change Q3i from a close-packed hexagonal system to a body-centered vertical system (-7,
Crystal Kou 9 becomes the 11th person (11ri. History, N; l, ('
) 2, H2% which gas absorption is beef dill: 1-rum white 14
The physical properties of \ are a1. [1; Riru.

Therefore, (the hot JJ-rolling according to the present invention) is ll ii (
1" or less, preferably 830.about.G ii 0"C (,' b /, de).

J
'1% + lll O) Revised; Extremely low bonding strength even with thermal Wt filling for 11] is known as 1, which makes the excellent W surface 1B joint strength 1σ fj. It turns out that IC6 this month (A koma [attack 1jj? heat treatment i! IA
I [j t, L! +4 (in the range of 1°C to 850°C. Below 540°C, the temperature of titanium as described above will increase. If deterioration is caused by 1゜this invention Z'), repeat IJ heating and 11 rolling several times. 'J' is also effective in preventing low trade in shallow areas.

In addition, when rolling the clad steel plate 8-a, the
1- L3, thin) 3-layer cladding 6'M 4f1i5-
a, fil (A steel 3-13 can be rolled and joined to a predetermined thickness from /i, or base material steel 3, -, such as 3-layer thin rad steel plate 5-a) +3 -
After joining using the pressure welding method, we further applied the 111 joining method.
It is also possible to join 1-13.

In the final product (lj
- In order to obtain the desired plate thickness, (a) the thickness of the 13 zirconium plate '1-△, and the thickness of the steel plate 3-A should be set as shown in the figure (c). 83 The amount of reduction when rolling L'J thin plate 331 clad steel plate 5-a and (E) From the figure (
l\) Moon to figure: -1: It is necessary to thoroughly consider ii and determine the thickness of the intermediate soot-like moon 2-A (b) using C.

(l\) In the figure
11; Take a test piece from 211. ! +kg/v11(de□:＞/, :oAlso, +150°(
'; X i Hr heat treatment hll! The shear test was carried out at 11-〕Tadokoro〕25-: l kg /' Noi glue・11Qi showed strong 1 sorrow, /f min)! 1 sufficient bonding force (it has been confirmed that there is a bonding force, and the results of other tensile tests 14i and bending tests also indicate that the bonding force is excellent). The board (・there is (the second one is Xl!-Ifsa4I was.

Figure 2 shows the 'IjIi, '1 product fli area of the present invention
ii.
, intermediate layer IF; it4 H'''i and (=J).

In the figure 4- Intermediate 'A'-If (4Cl
2~C is titanium, titanium alloy)
l' 11 Objective intermediate layer'("it. This i・1 additive intermediate 1+"i is the maximum P Wt: However, zirconium and soot (good compatibility with Δ,
114 Mechanical properties 9 Mechanical properties V1 Characteristics C'IJ' Ii After rolling and heat treatment 1!2 The properties of Zirium clad steel are inferior to 1 Hi! The reason why it's so old is that the all-tantanium alloy was sold out.

FIG. 3 is an explanatory diagram according to the manufacturing process of four-layer zilnium clad steel-1-culm.

In FIG. 3(A), 4-1) shows an intermediate sooty layer (A), and 2-1) shows an additive intermediate layer 'Q il'+. These are conventionally known methods of joining dissimilar metals,
Bakuko Pressure i-ho, 111.11! ! Joining method, 1” - Lulu 1&
The clat shown in FIG.

This clad plate is rolled once (J, 3-d is rolled by 15 mm. At this time, the rolling force: lJ, In order to improve the temperature, heat treatment should be carried out.

Koushili! ? kratllx (i-
I accept the tl as (d) figure! 11.1 <Intermediate Soot Shrine 4-(
Arrange them so that the middle layer 2-[1 is facing the IN March 13-1) side, (Small) As shown in the figure J, joins the sea urchin. (i1\) In the figure (13 7-1) is an additional intermediate layer/'intermediate 9. ~1 joint/' 71 layers of steel I, steel plate 'C' ilj+, these 18 joints are conventionally known), +, 41Φ6] bending method, for example -7:1 method for explosion, 1111 losses 1) ↓ legal, 1-1
-November [1 person 41' ゛(ko J, Rimi/dl+sa 4.

Clad copper 7-D is (l\) in Figure 11, J, -) (
, 2 dill-1 nium clad steel 11j 7 of a predetermined thickness
- (If the rolling temperature is 1'J IJ - Rolling capacity is 7' -1) 1. /
1. ! □I... 1715()'s iIy, I', +'
Roll within the range. (to) In the figure (3-cl -t,
January 11th's A9 (temporary to Izukunz 1, 1-CI includes (Ajil 1 - Ram 1, : 3- [+ 1 to I) material steel plate. For hot use Φ) , heating and I[3+f, repeat JIX 'iJ t-doblsu (11-(・A0,
It is also effective to apply two intermediate annealing.

[1-le 1[1 easy inclusion of contact method, crat steel 7-10 j[
)i[cl when c, :, a 4A1. -1. ), iW
Temporarily rolling the plate G cl, 1 flame 3-1) to the specified (dust;'n C1, 1, 1,) Tomoe+r
It is possible. ;l: /, ~, thin clad plate (
') After creating -Ll, connect IIJ)+43-D to 11-L11, and join 441-1') to S1)T! J (tlζC exists.

As explained above in various details, the dill-1 nium chloride 6':41+ of the present invention may be subjected to heat addition (11) in the culm during production, or (after production). Adequate heat treatment, etc.'a/1Y-1 also has a bonding strength of 1 and 11
10J' additivity] has been recognized in Ulf, and it has traditionally been considered difficult to use (thin plate wide + 1J Jill - Mini Lamb Clara l"i'l'1'JX has 11%C), shoulder H height l, 21. Example 1 (Jl) Plate thickness!i 0 +nII, IIJ 10 (1 m
lI, ma 2 (Mountain of Hlnni 1 (of role, 134
2 steel plate, with a plate thickness of 2+am as an intermediate soot.

+l+ l 0011111. Length 20011II
ll-1)゛3rd month width tantalum (anti-u, G RII
? N, history 1 thicker! imL+l”100n+L&
Sa 20 (Jill 1-ul
2"i,), < 5lTf () to obtain zirconium clad steel.

This dill-1 crad steel of this invention was heated for 11 hours by welding heat or [41 assuming excessive heat treatment. Joining of clad steel! The results of the shear III test on the IIA surface are shown in Table 1. The edges of this test, S!, and the indefensible zirconium clad steel are 1lTf aX to have a sufficient 18 resultant force.
,.

(b) (a) ] t'+ and the phase difference 1.14 method (,) i's two) layers of Zirni'nium IM? :'＋
Create a cladding (.

This crat steel was heated for 1iOf+"c (-1 hour and
J1112it'' was rolled for 1 inch, and the plate J9 was 11.4 parts, +l+ 400 open, length 100 (lJ).

The shear test results for four rolls of this zirconium clad steel are shown below.
Less than 1.

As a result of this test, please confirm that the unexplained Sil-1-Uno-1 Knot steel is sufficient for the 4ヱ1)2 resultant force. (Actual bending test lAb b ts +: Good! J(/,
r song (eye Ill l 1'1 is right 1 i ``recognize 1.,:.

(C) As shown in (II>), in Nijiru, "1'1 formation as well as Tsumkurat Joka) Jjiru-1-Ul\Kunotsu+: Stt+ <: board y'p! i0關, +l+ 10
On, quality 200Il111 city; 8 holes 42 steel plate of 1 fiber! x Arrived at Kozuki, Jill-1-Uno in history, plate thickness 10 u on the surface, medium 100 mIN, length 200 + ui
dill 1 nium (and t17Je I'j-neck () I ko.

11 pieces of Jill-1-lam clad were heated at 850℃ for 1 hour to produce 15-1 yarn! ! :! 'l') to month iif shi,
1l) il713.3, IIJloo tn, F
<Sa 2 (Created on 10U Zir-nium oxide steel root.

Table 1 shows the shear test results of the joint surface of this Jill l-Ramkunrad steel root.

In this Test 11)), it was confirmed that the di-1'1 bed steel of the present invention had sufficient bonding strength.

(+1 > (to) (1,3-(Created!) A Nijiru-1 Ni clad steel plate was heated at 850°C for 11 hours, then air cooled, and the shear test at the C joint interface was conducted. I accept the Song Dynasty as table'l.

Go to this test 〇) From the results t) / 1 \ Komei no Jill-1-ul
＼j'l'1 is enough, the bonding force is T1, 11 is +11
f K, Σ.

Practical f-adic Example 2 L in Example '1゛1° in place of 1 Tsumugi tantalum 4] - Using industrial Tsumugi 2 717 board and using the same method, Jill 1 Ni 11 Kuratsu 1 ~ 'Steel ('1 formed, each stage -
(A shear test was conducted on the bonding interface. The test results are shown in Table 1.
Accepted.

As a result of this test, the Jill-1-Uno, Clat steel of the present invention was found to be superior in 1. : Reducing the bonding force by 4j is IIIF I'l
;gsa4LIζ2.

Example 3 Example 1 (+1> shows Rigiru 1-Ul\Knot steel, 11.4m1It x 10011IIW
x 200ul. 50111I[×100Ill
IIW
W x 200cm Jill' Leek 1. + Bume arrangement j
i'i, pure atmosphere l-(H) 'l orr)
, IJII fever; nA Its 7 (1 (1-110
0℃, monthly force 0.1 kg / 11+I 1st 1,
Add 1j' 11. 'J for diffusion bonding for 1-10 minutes or more.
1. This crat was heated to 850°0 for 1 hour with IJ11.
NIll x 10011111t W x 01(
1 (ln1ml Jill 1-U11 crat steel plate was created.

This dill 1 nium treatment) dod 5VI4 anti-han 1 (3) small (
'' As is clear from the shear test results, the excellent 1st and 2nd resultant force is 11th, 1st, \rejin 2nd 3゜Example 4 Reprint S +342 Steel 1f, i, !i0+nmt x
100m++W
200wm l-wo1ljX 58 II r3L/,
Furthermore, industrial pongee titanium plate, 2mt+L
100uWX 200II+ol- 1 shot J11"'
1, and then zirconium (1 so, 6 t x
100IIIWX 200mm1 was ★■ pressure bonded to create a 4-layer zirconium clad steel.

This zirconium clad steel is 850'C1III￥
After heating for a while] Rolled to 201+ml x
H) (1++1llWX 600mm1- zirconium clad steel binding, history is 8!
, after heating for 1 hour, spread 1 (h++ t x
H) Ou W x 1200ml l-11 method and E1
: lt)-/:: .

This Sil-1-Umukuntu 1-Steel (KO) joint is strong! σ
As shown in Table 1, 19re1. : Bonding strength C'I15 was observed.

Example 1 Row 5 Gill-1-lambcrat steel was prepared using the same method as Example 4, and heated at 870°C for 1 hour. j(10mmWX
G(1(lnu+11- usage l,+il,,
October 1st
50℃(a-)l.

This jill-1-ul\ clad bond N1xb Table 1 (shown here)
As is clear from the 1-shear VJi test results, it is clear that 1 fold I is 1 layer/J [11, z/l,, +
1 Example 0 ili 11 (11i for 1 collection of li = A −1) I
M 2nna L x 10 (1 mm W and pure titanium for one leaf 10 u t x 10 (room W 4;
true? Atmosphere technician (01-' l (II) Heating temperature 1
σ ioo, 11oo”c, 加J 地力tl, 'l
kg /no (hereinafter J, I+++ Ij: 11.Hii
IH 1 minute or more expansion j1 (junction IJJ, s) 8 joints 1
, this kushit 1 do 1 is extended by J to cold moon extension, and +1 to Ritsu 1-14, ((1,5I2.5) n1lIL
x 1 (10 rivers 11 W x 4 (H1m++ l, (9 plates Unot board.
1111 X [1(1+old HW X 4(10v+
l-'s l +J, 2A] The plate becomes the steel side 1) 4 light 1:1i'r L, history (, -1 that J tan (j) Zil 1 nium treatment on soil! + mml X I ( H) +111 W
X 4flhui l-, same article 1'IC as above
1ljt +19.18 riru (2 dotkoJ, 04th layer sil 1-umkunino-nE' tlil(!i l-
2,! i-I O,51-! +0) tuft
i (10mmWx40010ml-1111
1゜Heat this Jill-1 clad steel at 830℃ for 1 hour, and roll it to 1/5th the plate thickness.
1-L 04+4- 0.1-11(1) ++nn
1. X 40 (1mm'WX,!+00mu
A 1k dillium clad steel was prepared.

We investigated the resultant force of 1 Shimkun Nod 5M plate on this J, Unishi C ('1), and as a result, the state after rolling (
'b, rolling qm 625'(', X 'l Ll r
[It remains to be seen that the bonding strength is excellent even after the C heat treatment.

Example 7 50 man 1. x! i0(1mm W x
50 (1+ nm l commercially available 8-hole 42 steel plate, 1.r++
nmt x 500 uW>g500I11111-
lvA river 1 for n = A-1 tentative and hnn+t x
5(Hh+++ W x' !i0(1m++ l-
Zirni 1 plate of 3 layers n, 'r>>, 4 views,
3 layers of cladding sweat] (5-l-1,5l !+O)
man l

This three-layer clad steel was heated at 8!10°C for 1 lb'i/: Immediately after that, it was heated to 11.3 m.
mtX! 100ml W X 250011
1111- Usage 1c" (, this taratu l;
4/Jl et al. 11.3 ++ mL x 5 (101
o+ll'vV x 1 (10th+: 11's (1 method LJI l1li shi, (1, iJ IA steel side commercially available 5I342 steel plate 1!i, fl book+i L X!
1 (lfinun W
h++i W X H100++ui l- for i>l
5j
This is 'a'850'','l11.'i
Heated for a while and extended from C1 straight to fffl, i, 34.2m+a
l X HHF+ulW
゜This Jill 1-・Sil\Kushit Steel Steel Moon Shi 1 [of, 1-1) state, Ht, Or 850° (E ×I If
+'Sky>nK'/) Practice:! The test results are shown in Table 2.
nibuta.

The test results show that this crat steel plate has excellent 1i) resultant strength,
ji[1!1] indicates that there is a bending force of 11 ([)].

Real I oil example ε3 1.5++++ L x 500Into W x
5(1()IIllll-'s publication r co,'!.

Genji AJ') kdoi4mIIt x 500u W
x 50011+n l- butane plate 1. When arriving at Shikozuki, J, Su 1*, this is 4, cold) 1 spread (0
,3+ 2.8) m1nt x 500+++nWx
2! +O(h+n+ l- clad plate i, l.

From this 2 -1ri-)・n1-1k to (0,3-L
2.8) till Lx 50 (LIIm W
100 (h+++ l- cut off 1'ili shi, niobium (
Commercially available 5B42&I4.150+i+nt
x! io011m W X 1000u l-1
Laikozuki-shishi, history M T-ta':/li '1TIL
C/L/ :Ll 2f shim plate, 10mmt X
! i(F Qm(I W

ko17) /IIM ') ', >Tsul'' lr length +
1! io°C1111Y +7! I 1111 iQ
After rolling, 32. Gbu+t X 10(10
+i+i W

This Jill L1-Umuku゛)・ノ1へj 岡１ruCノ)j-
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, it is an explanatory diagram showing the embodiment 'l'+ of tree defense51
The symbols in the diagram indicate the materials listed below.
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l' Accepted the small, which is 11th place.

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Claims (1)

[Claims] (1) At least one composite material layer made of zirconium or zirconium is bonded to at least one layer of carbon steel or Ill I made of alloy steel
Zirconium clad steel that is integrally joined with the J layer. (At least one layer of zirconium I A dillium-1 clad steel integrally joined with at least one abrasive layer made of carbon steel or low alloy steel through bonding.