FORMULA
Conversion of Weight units.
1kg = 2.2046 lbs 1kg = 1000 grams 1gm = 15.432 grains 1lbs = 453.6 grams 1lbs = 16 oz 1lbs = 7000 grains 1grain = 0.0029 oz 1oz = 437.50 grains 1penny = 24 grains 1ton = 2204.6 lbs 1bundle = 10 lbs 1bag = 100 lbs 1mund = 40 kg 1mund = 88.18 lbs |
Conversion of length units
1m = 1.0936 yards 1m = 39.37 inches 1m = 100 cm 1m = 1000 mm 1cm = 10 mm 1yard = 36 inches 1yard = 0.9144 meter 1yard = 91.44 cm 1ft = 12 cm 1ft = 30.48 mm 1hank = 840 yards |
Moisture Relation for Textile Materials
M.R = w/D*100 M.C = w/w+D*100 = w/W*100 M = R/(1+R/100) C.C.W = D * (100+R/100) |
D = C.C.W *(100/100+R%) C.C.W = D+R% C.C.W = D+(D*R/100) Volume of air = area (feet sq) * liner speed (ft/min) Pm = CA + CB/WA + WB = PAWA + PAWB/WA + WB |
Blow Room & Carding Section Cleaning Efficiency = trash removed/total trash fed *100 Efficiency = tr/tf * 100 = tf-tr/tf * 100 Waste = trash + lint Waste Extracted = weight fed * waste% Waste Extracted = weight fed – weight delivered Weight Delivered = weight fed - waste extracted Weight Delivered = weight fed * (100 – w/100) Weight Fed = weight delivered * (100/100 – w) Lap length (directly proportional) lap change wheel |
Lap length = lap length constant * lap length constant wheel Beats/min = rpm of beater * number of strikers Beats/inch = beats per minute/feeding rate (inches/min) Beats Constant = beats/inch * rpm of paddle roller Beats Constant = beat per minute/feeding rate Efficiency = actual production/calculated production * 100 Actual production = calculated production * efficiency Actual production = weight of lap(lbs) * number of lap/hr M.D = s.s of shell roller/s.s of paddle roller Production of B/R (lbs/hr) = production constant * N(shell roller rpm) * W(oz/yd) Production of card (lbs/hr) = πDN * 36 * 60 * 1 *ŋ/36 * 840 * count |
Production of card (lbs/hr) = πDN * 36 * 60 * (weight in ozs) * ŋ/36 * 16
No of scutchers required = feeding rate of cards/production of one scutchers
No of card required = production of blow room/feeding rate of card deptt
Production of card (lbs/hr) = delivery rate(m/min) * grain/yds * 1.0936 * 60 * ŋ/ 7000
Time to complete full card can = sliver length(yds)/delivery rate(yds/min)
No. of scutchers required = production of blow room/production of one scutchers
No. of card required = production of card section/production of one card
Tension Draft = s.speed of C.C.R/s.speed of Doffer
Total Lap weight = lap length * weight/yd
D(Trumpet guide) = 0.015625 * count * √
Waste% age = input – output * 100
No of scutchers required = feeding rate of cards/production of one scutchers
No of card required = production of blow room/feeding rate of card deptt
Production of card (lbs/hr) = delivery rate(m/min) * grain/yds * 1.0936 * 60 * ŋ/ 7000
Time to complete full card can = sliver length(yds)/delivery rate(yds/min)
No. of scutchers required = production of blow room/production of one scutchers
No. of card required = production of card section/production of one card
Tension Draft = s.speed of C.C.R/s.speed of Doffer
Total Lap weight = lap length * weight/yd
D(Trumpet guide) = 0.015625 * count * √
Waste% age = input – output * 100
Draw frame Section
Actual Draft = weight/yd fed * No. of doublings/ weight/yd delivered
Production(lbs/hr) = delivery rate(m/min) * 1.0936 * 60 * No. of deliveries/7000
Production(lbs/hr)(only for two deliveries)= delivery rate(m/min) * 0.45 *grains/yd * ŋ
Production(lbs/hr) = πDN * 60 * tension draft * ŋ
36 * 840 * hank sliver No. of Deliveries Required= feeding rate of simplex/production of finisher draw frame
Actual Draft = weight/yd fed * No. of doublings/ weight/yd delivered
Production(lbs/hr) = delivery rate(m/min) * 1.0936 * 60 * No. of deliveries/7000
Production(lbs/hr)(only for two deliveries)= delivery rate(m/min) * 0.45 *grains/yd * ŋ
Production(lbs/hr) = πDN * 60 * tension draft * ŋ
36 * 840 * hank sliver No. of Deliveries Required= feeding rate of simplex/production of finisher draw frame
Unilap Section
Production(lbs/hr) = delivery rate(yd/min) * lap weight(grains/yd) *60 *1.0936 * ŋ /7000
Note = 1 penny = 24 grains/yd
Production(lbs/hr) = delivery rate(yd/min) * lap weight(grains/yd) *60 *1.0936 * ŋ /7000
Note = 1 penny = 24 grains/yd
Comber Section
Production(lbs/hr) = L * F * N * H * (100 – W) * 60 * ŋ / 7000 * 36 * 100
Note
L = lap weight in grain/yd
F = feed rate in inches/min
N = nips/min
W = noil %age extracted
H = no of comber heads
Simplex Section
Feeding Rate = π * D(dia of back roller) * Rpm(back roller)
Delivery Rate = π * D(dia of front roller) * Rpm(front roller)
TPI = TM√
TPI = spindle speed/Delivery rate or F.R delivery in inches/min
Production(lbs/hr) = front roll delivery * 60 * 1 * ŋ /36 * 840 * count
Production(lbs/hr) = flyer rpm * 60 * No. of spindles * ŋ / TPI * Hank roving * 36 * 840
Production(lbs/hr) = 5.7 * flyer rpm * ŋ (for 120 spindles m/c) /TPI * Hank roving
TPI = flyer speed/Delivery rate or F.R delivery in inches/min
CPM = front roll delivery(inches/min) /Bobbin circumference
Feeding Rate = π * D(dia of back roller) * Rpm(back roller)
Delivery Rate = π * D(dia of front roller) * Rpm(front roller)
TPI = TM√
TPI = spindle speed/Delivery rate or F.R delivery in inches/min
Production(lbs/hr) = front roll delivery * 60 * 1 * ŋ /36 * 840 * count
Production(lbs/hr) = flyer rpm * 60 * No. of spindles * ŋ / TPI * Hank roving * 36 * 840
Production(lbs/hr) = 5.7 * flyer rpm * ŋ (for 120 spindles m/c) /TPI * Hank roving
TPI = flyer speed/Delivery rate or F.R delivery in inches/min
CPM = front roll delivery(inches/min) /Bobbin circumference