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XTRONG

INTRODUCTION

Tapered glass joints are predominantly used in Industrial Glass Equipment in India. This design has high ratio of radial to axial force which frequently leads to breakage while making the joint. The higher breakage had deterrent effect on buyers.

It was recognized for the first time in India by GOEL in 1989 that a glass cylinder stands better in the application of axial force rather than in application of radial force. To exploit this feature of glass, we have come up with a new design of glass joints which is named as 'XTRONG'. It can be seen in the graph below, that with the same axial force, the effective radial force in Xtrong is 14 times smaller than in tapered joints.

Xtrong joints are practically many times stronger than conventional tapered joints as far as tightening of joints is concerned. It is tested that a Xtrong joint does not break even at a torque of 20Nm, as against tapered joints, which start breaking at 6-7 Nm torque. At times it may happen that because of over tightening, a metal backing flange breaks or the threads of nut-bolts give way but Xtrong glass joint remains intact.

Most of the old glass installations in India contain equipments with tapered glass joints. Xtrong joints are fully compatible with these tapered joints i.e. an Xtrong equipment can replace another tapered/QVF equipment and vice versa in any existing unit. This interchangeability makes Xtrong design more adaptable in Indian conditions and change over cost is negligible.

Xtrong which was mainly discovered as an "Answer to breakage", has found to have many other advantages, like follows,

  • Usually all the glass joints possess a little or more ovality. Tapered joints are highly sensitive to ovality. However in  Xtrong joints ovality hardly effects and gives no breakages.
  • Due to force and temperature, inserts of backing flanges in tapered joints stick to the glass as well as to metal flange. This makes dismantling of unit more difficult and breakage prone. In Xtrong design, insert does not sticks and makes the dismantling safe.
  • In tapered joints long threaded bolts are used because, while tightening, the soft inserts keep on compressing and slipping over the tapered surface. This results in requirement of more labour and time for tightening. The design of Xtrong joints has reduced the length of tightening of bolts to less than a half and saves time and labour.
  • In Indian conditions of manufacturing, Xtrong joints are easy and fast to produce. This is because it requires to process smaller length of a raw glass tube.

With so many benefits and particularly low breakage risk, we have adopted  Xtrong design for all equipments  manufactured by Goel and its group companies. The Xtrong is widely accepted and adopted by users as well as manufacturers of Glass Equipments in India.

DIMENSIONS OF XTRONG ENDS

DN

D

D1

D2

H1

H2

A

B

25

34

27

41

13

8

65

9

40

49

40

56

14

9

65

9

50

62

52

69

16

11

65

9

80

91

79

98

18

12

65

9

100

123

108

132

20

17

65

9

150

166

159

184

22

19

65

9

225

233

229

258

24

26

65

9

300

315

308

340

24

26

65

9

400

425

405

463

25

35

65

9

450

499

455

526

25

50

65

9

600

640

600

684

25

60

65

9


 


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