.	POST WELD HEAT TREATMENT [STRESS RELIEVING]   HEATER PADS, HEATER ELEMENTS & ACCESSORIES

2] STRESS RELIEVING 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

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

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

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

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.

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	416	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 Temcon 60 and Temcon100 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.

Stock No	Length mm	Width 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”]