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Post Weld Heat Treatment (Stress Reliving), Heater Pads, Heater Elements & Accessories

[A] CERAMIC FLEXIBLE MAT HEATERS:

Ceramic Flexible Heaters are manufactured using high grade materials and have a working temperature capability of 1050ºC. They can be powered from Power source/ Heat treatment units, Control Panels or Welding machines.

Heater Pads consists of multi-strand Nickel-Chromium wire, electrically insulated by interlocking sintered alumina beads, providing a flexible high heat transfer. Mats, complete with twist lock connectors are available.

Heaters are rated at low voltage of 30V, 32.5V, 40V, 42.5V, 60V, 65V, 80V and available in wide range of sizes. Non-standard voltages of 220V & 240V are also available. Mats of other sizes and rating can be supplied on request.

Heaters are rated at 45 Amps for 30V, 60V and 80V and 50 Amps for 32.5V, 65 V and 85V.

Heaters pads can also be used for pre-heat, post-heat and post-weld Heat Treatment of welds.

60V & 30V Elements

Stock No

X mm

Y mm

V

kW

         

201

75

660

60

2.7

202

100

495

60

2.7

203

150

330

60

2.7

204

205

250

60

2.7

205

255

205

60

2.7

206

305

165

60

2.7

207

280

145

60

2.7

208

405

125

60

2.7

209

535

100

60

2.7

210

610

85

60

2.7

211

1220

45

60

2.7

212

85

255

30

1.35

         

85V & 42.5 V Elements

Stock No

X mm

Y mm

V

kW

351

405

170

85

4.25

352

180

405

85

4.25

353

865

85

85

4.25

354

1650

45

85

4.25

355

3000

25

85

4.25

356

380

85

42.5

2.12

357

1500

25

42.5

2.12

         

220V & 240V Elements

Stock No

X mm

Y mm

V

kW

271

330

610

220

9.9

272

330

660

240

10.8

65V & 32.5 V Elements

Stock No

X mm

Y mm

V

kW

301

305

170

65

3.25

302

180

300

65

3.25

303

635

85

65

3.25

304

1195

45

65

3.25

305

1190

25

65

3.25

306

280

85

32.5

1.62

307

525

45

32.5

1.62

308

845

25

32.5

1.62

80V & 40V Elements

Stock No

X mm

Y mm

V

kW

251

75

910

80

3.6

252

100

680

80

3.6

253

150

450

80

3.6

254

205

350

80

3.6

255

255

290

80

3.6

256

305

230

80

3.6

257

280

185

80

3.6

258

430

165

80

3.6

259

535

145

80

3.6

260

840

85

80

3.6

261

1675

55

80

3.6

262

45

760

40

1.8

[B] INSULATED CERAMIC FLEXIBLE MAT HEATERS

Similar in construction to Ceramic Flexible mat Heaters with additional ceramic fibre insulation encased in stainless steel mesh and protected by a stainless steel backing plate. Specially suitable for preheating pipes, vessels, and welded fabrications having either longitudinal or circumferential seams. Robust and operate from a welding machine or Heat Treatment unit. Gives protection to the Ceramic Beads from weld splatter. Can be magnetically attached to work piece for fast application by use of two magnetic clamps.

80V & 40V Elements

Stock No

Width mm

Length mm

V

kW

Amps

401

102

762

60

2.7

45

402

711

108

60

2.7

45

403

127

597

60

2.7

45

404

102

1016

80

3.6

45

405

940

108

80

3.6

45

406

127

762

80

3.6

45

[C] FINGER ELEMENTS:

Finger elements are well established pre and post weld heaters, suitable to be powered from AD/DC welding machines or power sources. Ruggedly constructed, they require minimal maintenance and are capable of withstanding considerable on-site maltreatment. The element consists of two solid drawn Nickel Chrome element wires passed through sintered alumina beads providing electrical insulation and high heat transfer capability.
Standard element maximum working temperature is 1050ºC each finger being rated at 120 Amps at 1.3 Volts.

For heat treatment of stainless steel, special solid drawn Kanthal wire is required to give a maximum operating temperature of 1250ºC

Steel connector blocks or twist-lock connectors are provided for end termination.

80V & 40V Elements

Stock No

Min mm Outside Dia of Pipe

Max mm Outside Dia of Pipe

4

15

20

5

20

30

6

30

35

7

35

40

8

40

50

9

50

60

10

60

70

11

70

80

12

80

90

13

90

100

14

100

110

15

110

122

16

122

132

17

132

142

18

142

152

19

152

162

20

162

172

21

172

182

22

182

192

23

192

204

24

204

214

25

214

224

26

224

234

27

234

244

28

244

254

29

254

264

30

264

274

31

274

284

32

284

294

33

294

304

34

304

314

35

314

326

36

326

336

37

336

346

38

346

356

39

356

366

40

366

376

41

376

386

42

386

396

43

396

406

44

406

416

45

415

426

[D] CHANNEL HEATERS:

Channel Heaters are main voltage heating elements. The elements can be connected in ‘STAR’ or ‘DELTA’ and operated from 380/415/440V 3 Phase supply. They can be used to heat-treat circumferential joints of large vessels using ‘BULKHEAD’ technique or can be used for building temporary furnaces for Heat Treatment at site. Portable and easy to handle, they have a long on-site working life and are suitable for a variety of applications. Channel heaters are most suitable to be used with KSR 60 and KSR 100 control panels. Working temperatures of up to 800ºC are permissible, but higher temperatures can be achieved using Kanthal wire as alternative element material. Steel connector blocks or twist-lock connectors are provided for tail terminations.

80V & 40V Elements

Stock No

Width mm

Length mm

V

kW

Amps

501

685

360

240

13.2

55

502

685

360

220

12

55

503

685

360

254

14

55

504

102

400

60

13.2

220

505

685

70

60

3.3

55

506

685

70

55

3.0

55

509

685

70

63.5

3.5

55

[E] HAND HELD DIGITAL THERMOMETER:

Model : PTI – 3P

Hand held model with digital display for quickly checking the temperature of the job.
Range: 0 – 1200 °C

[F] THERMO CRAYONS:

To check the job temperature during pre-heating / post heat treatment. Mark the job with the crayon of the desired temperature. The mark melts on reaching the temperature. Available in wide range of temperatures from 100°C to 700°C.

[G] PERMANENT MARKERS:

To mark the job for identification before or after heat treatment. Available in aluminium squeeze tubes containing special fluid paint. Available in Yellow, Red, Green, Blue & Black colours. Marking Tip Size: 1.6 mm and 3.2 mm [1/16” and 1/8”]

 

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