Calendering

Transcription

Calendering
Woven Wire Cloth
manufacturers of Woven Wire Cloth for over three decades, Haver & Boecker and
Standard Group, guarantee the most suitable Woven Wire Cloth for every demand.
0.025mm dia. (25 microns), we weave all materials such as Stainless Steel, Copper,
Brass, Phosphor - Bronze, Nickel, Monel, Silver, and Plastics.
large quantities.
rolls, pieces, strips, discs, fabricated
to suit you requirements in small or
Cut-to-size pieces of Woven Wire Cloth
Filter Discs
Types of Weave
Twilled Weave, 4-bonded
Flat Top Screen
Twilled Weave, 5-Bonded, EGLA 5,
Satin Twilled Weave
BMT Board Mesh Twilled Dutch Weave
DTW Dutch Twilled Weave
RPD Reverse Plain Dutch Weave
Plain Weave
Types of Filter Cloth
SPW Single Plain Dutch Weave
Formulas and Symbols for Wire Cloth
w
d
p
a0
=
=
=
=
=
width of aperture in mm
diameter of wire in mm
pitch = w + d
free open area
w2 x 100
p
Mesh = number of apertures per English inch = 25.4
p
10
Nr./cm = number of apertures per cm = p
2
M/cm2 = number of openings per cm2 = ( 10
p )
Today Wire Cloth is determined by clear apertures and wire diameters.
Formerly it was termed by ‘No.’ or ‘Mesh’ which is the number of
openings in a linear inch.
Required Details for Wire Cloth Orders
• Mesh Count and/ or aperture width (w)
• Roll length
• Wire diameter (d)
• Roll width
• Material
• Post weaving fabrications - if necessary
• Type of weave - if necessary
Post Weaving Fabrications
required for a particular application.
Where these requirements cannot be met during the actual weaving process, we have developed many post-weaving treatments which are described in
greater detail below:
Calendering :
Strip Cutting : Wire cloth can be cut into strips down to a few millimeters in width. Depending on the type of cloth, lengths of 30 feet to 650 feet
can be supplied.
Edges
: Wire cloth in rolls has either woven edges or cut edges, depending on whether it is woven conventionally with a shuttle or on
a shuttleless loom.
Weights of Wire Cloth and Wire Mesh
Conversion Table
relation to plain Steel:
Aluminium (pure)
Aluminium (56.S)
Brass (70/30)
Brass (80/20)
Commercial Bronze
Phosphor Bronze
Nickel
Stainless Steel (304/316)
Monel
Copper
34.7% of plain Steel
34.2% of plain Steel
108.8% of plain Steel
110.5% of plain Steel
112.1% of plain Steel
113.1% of plain Steel
112.3% of plain Steel
101.0% of plain Steel
113.3% of plain Steel
114.1% of plain Steel
Size Conversion Table
1mm
= 0.039in
2
1m2
1Kg
= 2.205lbs
1Kg/m2
1in
2
1lb
2
= 25.4mm
= 0.0929m2
= 0.454Kg
2
= 0.0488Kg/m2
Calculation for Weight of Wire Mesh
d
p
G
Mesh
G
= mm
= mm
= kg/m2
= 25.4
p
= mesh x d2
2
= wire diameter
= pitch (w+d)
= mass per unit area
= number of apertures per inch
Standard Wire Gauge
S.W.G.
In.
Mm
S.W.G.
½
7/16
3/8
5/16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
.500
.4375
.375
.3152
.300
.276
.252
.232
.212
.192
.176
.160
.144
.128
.116
.104
.092
.080
.072
.064
.056
.048
.040
.036
.032
.028
.024
.022
.020
12.70
11.113
9.525
7.938
7.620
7.010
6.401
5.893
5.385
4.877
4.470
4.064
3.658
3.251
2.946
2.642
2.337
2.032
1.829
1.626
1.422
1.219
1.016
.914
.813
.711
.610
.559
.508
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
In.
Mm
.018
.0164
.0148
.0136
.0124
.0116
.0108
.0100
.0092
.0084
.0076
.0068
.0060
.0052
.0048
.0044
.0040
.0036
.0032
.0028
.0024
.0020
.0016
.0012
.0010
.00080
.00071
.00063
.00059
.457
.417
.376
.345
.315
.295
.274
.254
.234
.213
.193
.173
.152
.132
.122
.112
.102
.091
.081
.071
.061
.051
.041
.030
.025
.020
.018
.016
.015
Misterscreen (Demister Pad)
and are retained until they coalesce and fall down,
and the free vapour passes through the apertures of
the mesh. Demisters are widely used for such
Gas-Liquid Separations and Desalination Plants all
over the world. HAST has been fortunate in supplying
to a number of such plants with encouraging results.
Misterscreen (Demister Pad)
Gas-Liquid Separations
Knitmesh
To Condenser
columns which operate under vacuum at atmospheric
and prevents ‘dry’ surfaces and channeling which
give the best results due to their capillary action. Free
Knit
Mesh
High
Liquid
Distributors
Feed Inlet
surface areas of upto 1600m2/m3 achieving higher
Knit
Mesh
To Reboiler
A Column Packed With Knitmesh
Product brochures for Misterscreen and Knitmesh can be had on request.
Knitmesh Column
Packing Pad