xplomet

Robert BAŃSKI Politechnika Opolska

- 1 -

Practical aspects of structural tests of titanium-Practical aspects of structural tests of titanium-steel bonds made by explosive cladding and steel bonds made by explosive cladding and

exposed to process thermal loadsexposed to process thermal loads

Maria SOZAŃSKA Politechnika Śląska

Zygmunt SZULC, Aleksander GAŁKA

Zakład Technologii Wysokoenergetycznyc

h

„EXPLOMET” Gałka, Szulc, Sp.j.

Subject about which we will not talkingAbout cladding elements to process apparatus

About cladding for electrotechnic, electrometallurgy and electrochemistry

About cladding bars, tubes and others… elementów..

- 2 -

Subject about which we will not talking

ETJ – Electric Transition Joints

About conductive rails for electrolysers of chlorine

About Electrical Transition Joints (ETJ)

STJ – Structural Transition Joints- 3 -

About Structural Transition Joints (STJ)

Tube sheetTube sheetReactorReactor

THIS WHAT WILL BE TALKING ABOUT ?

First we have to make cladding plate :

ASME SA-240 304 L + ASME SB 265 Gr.1,

and later ….

there is a question, is this should be heat treated or not?

CONTROL OF SET AND PROCESSCONTROL OF SET AND PROCESS

- 5 -

Control of explosive’s thickness

Measurement of detonation speed in productive set

Making cladding of Ti Gr.1 + 304 L (6 + 95 mm)

6

And we back to the question, if cladding plate Ti Gr.1 + 304L should be

heat treated or not?

From cladding plate in sizes: (6+95) x 3150 x 3150 mm

was taken test plate and test samples.

220

Margins after UT

Test plate P158/2/2 P158/2/2

Test plate

P158/2/1

Test plate P158/2/0

P158/2/0

3040 mm

Ti 2800 mm 220

780 780

3150

0

300

300

„0”

„1”

„2”

„3”

Initiation point

P158

/1/2

/EK

220

300 120 120

780

P158

/2/2

/PO

1

P158

/2/2

/PO

2O

2

EX/P158/2/2

P158

/2/2

/PO

3

P158

/2/2

/PO

4

Number

of test plate

Parameters of Heat Treatment

Results of mechanical test

Temp.

[ C]

Time

[h]

Rs – shear test

[MPa] / średnia

Ro – tensile test

[MPa] / średnia

Without HT

With HT Without

HT With HT

P158/2/2/PO1 540 1 441 302 309 181

P158/2/2/PO2 540 2 385 332 408 298

P158/2/2/PO3 610 2 406 324 374 212

P158/2/2/PO4 650 4 360 292 220 140

TEST’STEST’S

- 7 -

We are making heat treatments and mechanical property tests

Result’s of Test

- 8 -

TEST’STEST’S Microhardness

- 9 -

TEST’STEST’S Microhardness in meltings area

188 HV0,1

185 HV0,1

393 HV0,1354 HV0,1

429 HV0,1

408 HV0,1

183 HV0,1

178 HV0,1

172 HV0,1

423 HV0,1

327 HV0,1

468 HV0,1

988 HV0,1707 HV0,1

P158/2/2/PO1C 150x 1mm 165 HV0,1

1mm 398 HV0,1

1mm 147 HV0,1

1mm 331 HV0,1

P158/2/2/PO2C 100x

183 HV0,1

172 HV0,1

182 HV0,1

188 HV0,1193 HV0,1

418 HV0,1

475 HV0,1

423 HV0,1

417 HV0,1 412 HV0,1

449 HV0,1

418 HV0,1

179 HV0,1

439 HV0,1

439 HV0,1

450 HV0,1

393 HV0,1

403 HV0,1

191 HV0,1

439 HV0,1

450 HV0,1

191 HV0,1

179 HV0,1

935 HV0,1

403 HV0,1

670 HV0,1

P158/2/2/PO2C 300x

423 HV0,1324 HV0,1

308 HV0,1191 HV0,1

165 HV0,1

153 HV0,1

173 HV0,1

389 HV0,1

181 HV0,1272 HV0,1

363 HV0,1

283 HV0,1

251 HV0,1

164 HV0,1

167 HV0,1

240 HV0,1

1mm 171 HV0,1P158/2/2/PO3C 100x

989 HV0,1

1mm 331 HV0,1

TEST’STEST’S

- 10 -

Structural tests 304L; intergranular corrosion.

304 LTemp.

[C]

Time

[h]

P158/2/2 xxx xxxP158/2/2/PO1 540 1P158/2/2/PO2 540 2P158/2/2/PO3 610 2

- 11 -

TEST’STEST’S STRUCTURE OF BOND, STRUCTURE OF BOND, DIFFUSSION LAYERDIFFUSSION LAYER

- 12 -

TEST’STEST’S SCHEDULE OF ELEMENTS IN SCHEDULE OF ELEMENTS IN DIFFUSSION LAYERDIFFUSSION LAYER

SCHEDULE OF CARBON CONTENTS IN DIFFUSSION

LAYER

- 13 -

TEST’STEST’S CHANGE OF SCHEDULE OF ELEMENTS CHANGE OF SCHEDULE OF ELEMENTS IN DIFFUSION LAYER AFTER HEAT IN DIFFUSION LAYER AFTER HEAT TRAETMENTTRAETMENT

ACCUMULATION OF CARBON IN DIFFUSSION

LAYER

- 14 -

TEST’STEST’S Conclusions

1. HEAT TREATMENT MAKES DECREASING HARDENING IN BOTH MATERIALS AND IN BOND ZONE.

Positive…

BECAUSE OF OBSERVED DECREASNG OF STRENGTH OF BOND ZONE AND BECASUE OF UNPROFITABLE PHENOMENONS

DESCRIBED IN POINT 2 AND 3 IN CONCLUSIONS, HEAT TRAETMENT OF CLADS TITANIUM – AUSTENITIC STAINLESS

STEEL SEEMS TO BE INEXPEDIENT.

2. ACCUMULATION OF CARBON IN DIFFUSSION LAYER CAN MAKE INCREASING OF ITS FRAGILE WHAT MEANS ALSO DECREASING OF BOND STRENGHT Negative …

3. ECXALATION OF CHROMIUM CARBIDE ON THE BORDER OF GRAINS IN AUSTENITIC STAINLESS STEEL CAN MAKE DECREASING ITS RESISTANCE FOR INTERGRANULAR CORROSION Negative …

COMPANY CHARACTERISTICCOMPANY CHARACTERISTIC

xplomet Zakład Technologii Wysokoenergetycznych „EXPLOMET” Gałka, Szulc Sp.j.

High-Energy Techniques Works

Employment: 6 workers Seat: 860 m2 , including:

room and workshop,

social back-up facilities,

store rooms,

offices. Company details:

Address: ul. Oświęcimska 100H, 45-641 Opole, POLAND

Tel.: +48 (077) 45 17 817; 45 17 818; 45 17 819 45 62 374, Fax: +48 (077) 45 62 511

E-mail: explomet@op.onet.pl ; biuro@explomet.pl; http:// www.explomet.pl

SMESME

- 15 -

- 16 -

W prezentacji wykorzystano materiały firmy EXPLOMET S.C. oraz Politechniki Opolskiej

Thank you for attention……Thank you for attention……