The v method of a few kinds of mechanical components

5(kg) × 40(yuan 300(of ／ Kg) ＝ yuan) ; Man-hour: 25(of 4 hours of × yuan ／ is versed in) ＝ 12.

5(yuan) ; Charge of electricity: 70(is spent) × 0.

56(yuan ／ is spent) ＝ 39.

2(yuan) ; Aggregate: 300(yuan) ＋ 12.

5(yuan) ＋ 39.

2(yuan) ≈ 352(yuan) . ② v shovels the fork-lift truck of blade, the ＝ of the charge that shovel blade that uses 6 months shovels blade price ＋ 1 times 2 times v expends ＝ 800 (yuan ／ ) ＋ 352(yuan) 2 ＝ of × 1504(yuan) . ③ not the fork-lift truck of v shovel blade, the ＝ of the charge that shovel blade that uses 6 months shovels blade price ＋ 3 times 2 times to change 800(of ＝ of the cost that shovel blade yuan ／ ) 3 ＋ of × 200(yuan ／ second) 2 ＝ of × 2800(yuan) . ④ v shovels the fork-lift truck of blade, use 6 months ③ of cost saving ＝ - ② ＝ 2800 (yuan) - 1504 (yuan) ＝ 1296 (yuan) . The fork-lift truck of blade of ⑤ v shovel year 2 ＝ of × of ④ of cost saving ＝ 1296 (yuan) 2 ＝ of × 2592 (yuan) . 2, ironworks installs ironworks of town square company to use fork-lift truck of v of D-65 of wear-resisting welding rod to shovel blade with change of example of fork-lift truck v, obtained a fork-lift truck year managing expenditure 9382.

45 yuan benefit, v method and benefit analysis are as follows: (1) method: With ― of D of wear-resisting welding rod 65 v 1, v ply 5mm is controlled; The point ministry that v place is blade board reachs his rear. V width: The front, from point ministry to in v 3cm is wide; Rear, from point ministry to in v 6cm wide, point is full v; The underside that shovel blade is perpendicular layer of point ministry v, fore-and-aft v of every other 15CM a wide 2CM, grow the v layer of 16CM. When this welding rod is being used, want to press service instruction, before solder welding rod drying, clear to weldment warm-up, the delay after solder is cold. (2) benefit analyses: The fork-lift truck that uses afore-mentioned methodological v shovels blade, use day number is 60 days, be equivalent to not the service life of v 3 times. Benefit analyses as follows: The charge that ① v shovels blade: Welding rod: 10(kg) × 40(yuan 400(of ／ Kg) ＝ yuan) ; Man-hour: 25(of 4 hours of × yuan ／ is versed in) ＝ 12.

5(yuan) ; Charge of electricity: 70(is spent) × 0.

56(yuan ／ is spent) ＝ 39.

2(yuan) ; Aggregate: 400(yuan) ＋ 12.

5(yuan) ＋ 39.

2(yuan) ≈ 452(yuan) . ② v shovels the fork-lift truck of blade, ＝ of use charge of daily shovel blade (1 times v expends ＋ of a price that shovel blade) ÷ use day counts ＝ 452(of 800 yuan of ＋ yuan) ÷ 60 days of ＝ 20.

87(yuan) . ③ not the fork-lift truck of v shovel blade, ＝ of ＝ of use charge of daily shovel blade shovels blade price ÷ 1 times to use day to count ＝ 800 yuan of ÷ 20 days of ＝ 40 yuan.

④ v shovels the fork-lift truck of blade, ③ of ＝ of daily cost saving - ② ＝ 40 (yuan) - 20.

87(yuan) ＝ 19.

13 (yuan) . The fork-lift truck of blade of ⑤ v shovel year day of economic 365(of × of ④ of direct cost ＝ ) ＝ 19.

13 (yuan) × 365(day) ＝ 6982.

45 (yuan) . ⑥ v shovels the fork-lift truck of blade, year decrease change the charge ＝ that the frequency saves (not of v change frequency - of v change frequency) × changes every time charge ＝ (every days of year several ÷ not the cycle of v uses day of number - the cycle of v of every days of year several ÷ uses day of number) × changes every time charge.

The fork-lift truck of blade of ⑦ v shovel year ＝ of managing ⑥ of ＋ of ⑤ of total cost ＝ 6982.

45 (yuan) ＋ 2400 yuan of ＝ 9382.

45 (yuan) . 2, annulus burns machine discharge to plow v method and benefit change to install city Rong Mao firm to use welding rod of cast-iron caboodle of D-667 Gao Ge, v annulus burns machine discharge to plow obtained year of managing expenditure 187698 yuan economic benefits, its v method and benefit analysis are as follows: 1, method (1) with D-667 welding rod, before v discharge is plowed, should press service instruction of welding rod of D-667 fast chromic cast-iron crowd, before solder welding rod drying, clear to weldment warm-up, the delay after solder is cold. (2) the alternating current welder of the dc that should choose power to install above for 10 kilovolt or above of 20 thousand volt-ampere. Confidential of use dc solder is received instead (welding rod receives positive electrode) . When v, with communication welder asks to carry voltage ≥ 70V for nothing, electric current should master in 200A left and right sides. If carry electric depress for nothing at 70V, want to increase electric current, fuse adequately with welding rod and mother capable person to allow. The scale of solder path width and height with 3:1Advisable. Such ability written guarantee with frit of mother capable person truly firm, form wants wear-resisting organization. (3) v place: Underside is all v; place of v of oblique plane caboodle is, from bottom up 10 - all plane inside 15cm limits. (4) D - 667 welding rod are multilayer v is flawless, but multilayer v. V plows a general v newly 2, v total ply is 8 - 10mm; old colter but v arrives original measure. Ply of colter bottom v with making its bring into contact with comb with a double-edged fine-toothed comb advisable. 2, benefit is analysed (1) need not D - v of 667 welding rod, year need to change 12 times colter, year is charge: ? Chi of Bin fragrant Zou talks about Ga  the Huaihe River to ask mulberry of fatigued of atmosphere of   Bin?8800 (yuan) × 12 - 6000 (yuan) =219600 (yuan) ; (2) with D - v of 667 welding rod, need two colter, constant annual ring sheds v to use, do not need to change; Year need welding rod 600 kilograms, year charge is: V of ＋ of welding rod charge uses ＝ of labour ＋ charge of electricity [600(kilogram) × 48(yuan ／ kilogram) ] ＋ [600(kilogram) ／ 20(kilogram) × 25(yuan) ] ＋ [600(kilogram) × 7(is spent) × 0.

56(yuan ／ is spent) ] ＝ 28800(yuan) ＋ 750(yuan) ＋ 2352(yuan) ＝ 31902(yuan) (3) year managing expenditure ＝ (1) - (2) ＝ 219600 (yuan) - 31902(yuan) ＝ 187698(yuan) . 3, plant of cement of An Xiexing of change of method of compression roller v uses manual arc welding, crusher of v double roller roller face, obtained service life to amount to 10 months, broken grog 150 thousand tons effect. V point is as follows: (1) of welding rod choose: Should choose D - 65, D - 667 with 506 welding rod, before v, press welding rod service instruction, welding rod drying, put in heat preservation box to reserve. (2) roller face processing: Roller face rehabilitate can be divided for local and direct filling solder of the whole after filling solder and whole are cleared two kinds of methods, also can saying is two processes. Of edge roller broad direction inhomogenous those who wear away to be nodded with decorative pattern, horniness is inhomogenous wear away and the whole of roller face wears away, can adopt local rehabilitate method to fill directly solder; In course 5-6 second fill directly after solder, because the mother's body bears repeatedly action of tall extruding stress, solder micro-crack is ceaseless and patulous, roll surface can produce the fatigue layer of certain ply, if welding rod of reoccupy wear-resisting rehabilitate is direct,fill right now solder, fall off between easy generation layer, reason needs v of layer of wear-resisting of travel of the reentry after fatigue to roll surface layer clears thoroughly. Assist solder fills after promoting cement plant to keep clear of for whole to the rehabilitate of roller face. No matter be direct,solder fills after filling solder or whole are cleared, error of two roller diameter cannot cross the circularity sum of errors of roll big, can cause roller press level otherwise vibration and inhomogenous load increases two roll. Clear layer of roller face exhaustion, plane of air of usable carbon arc undertakes clearing, want the fatigue layer planing machine roller face clean, make roller shows layer of mother capable person. Before v, want to press welding rod service instruction, undertake stoving to welding rod, to weldment warm-up, the delay after solder is cold. (3) the alternating current welder of the dc that should choose power to install above for 10 kilovolt or above of 20 thousand volt-ampere. Confidential of use dc solder is received instead (welding rod receives positive electrode) . When v, with communication welder asks to carry voltage ≥ 70V for nothing, electric current should master in 200A left and right sides. If carry electric depress for nothing at 70V, want to increase electric current, fuse adequately with welding rod and mother capable person to allow. The scale of solder path width and height with 3:1Advisable. Such ability written guarantee with frit of mother capable person truly firm, form wants wear-resisting organization. (4) v order and ply: After roller face warm-up, should use v of 506 welding rod first 1 - 3, look for roller the circle. Next even ground v counts a D - 667, achieve due ply. D - after v of 667 solder layer is over, again v a D - 65, v ply is 3 - 5mm; D - after v of 65 solder layer, reoccupy D - 65 v figure of an approach contrast. (Roller face tatty arises, must have at the same time smash the pressure that stock place needs and relatively slip two elements. Pressure is decided by stock property place, change hard normally. And will reduce content to be in extruding process through form of roller face figure with roller face relatively slip, some easier. Home is inchoate although use herringbone figure can prevent stock circumferential and slip, but did not restrict pair of stock to slide in the axial in extruding process, it is especially when the stock with extruding lesser grain, wear away more serious. Compare with this photograph, use approach contrast figure and the intermediate roller area that adds hard particle, wearability is best. ) the side of approach contrast figure is long for 4 - 5cm, solder path width is 1cm left and right sides, height is 4mm left and right sides. The ply of each wear-resisting layer wants do one's best to agree equably, in order to make compression roller maintains a circle forever in use process. (5) when v, want 3 to fall, rest the person does not rest horse, make weldment maintains higher temperature for long. 4, dish plant of cement of happy eaves of the v method that tower type engine establishs kiln separator toothed segment and county of benefit Le Ting, 2 those who use is Nanjing production.

9 meters of × dish of 10 meters tower type engine establish kiln. There are 12 to use toothed segment and 12 static toothed segment on its separator, its function is the grog that finish broken. Usually, after new toothed segment uses a year (about broken grog is controlled 70 thousand tons) , because toothed segment wears away badly, affect broken quality and crop badly then cannot reoccupy. But, with D-667 welding rod tatty of will old toothed segment ages tooth v is used to add of original measure succeed, but reuse two years, service life lengthens one times than new toothed segment. Managing expenditure 36720 yuan. Method of １ , v: (1) uses D-667 welding rod, before v toothed segment, want to press its service instruction, welding rod drying, clear to weldment warm-up, the delay after solder is cold. (The alternating current welder of the dc that 2) wants to choose power to install above for 10 kilovolt or above of 20 thousand volt-ampere. Confidential of use dc solder is received instead (welding rod receives positive electrode) . When v, with communication welder asks to carry voltage ≥ 70V for nothing, electric current should master in 200A left and right sides. If carry electric depress for nothing at 70V, want to increase electric current, fuse adequately with welding rod and mother capable person to allow. The scale of solder path width and height with 3:1Advisable. Such ability written guarantee with frit of mother capable person truly firm, form wants wear-resisting organization. 2, because benefit analysis moves toothed segment to wear away serious, they moved toothed segment to undertake v to 12 only. A new toothed segment 1660 yuan, 12 new toothed segment are 19920 yuan. 12 toothed segment use v D-667 welding rod 60 kilograms, every kilograms of welding rod 45 yuan, with welding rod cost 2700 yuan; Charge of electricity and artificial cost every 35 yuan, 12 toothed segment are aggregate 420 yuan. (1) not the separator of v toothed segment, need 24 two years to use toothed segment, charge is: 1600(yuan) × 24(piece) =39840(yuan) ; (The separator of 2) v toothed segment, charge of two years is: Cost of electrician of ＋ of welding rod charge and 2700(of artificial cost ＝ yuan) + 420(yuan) =3120(yuan) ; (3) two years of managing expenditure: 39840(yuan) - yuan) =36720(yuan) . CNC Milling CNC Machining