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Wysłany: Śro 14:57, 03 Lis 2010
Temat postu: ugg boots sale 1 kind of concave curved shaped are
1 kind of concave curved shaped area of computing a new method
Approximate calculation method for data only, not accuracy, operability is not strong. The author in the design of 20t, 22t, 25t large ingot process derived a set of both accurate and easy to handle formulas for reference. Formula 1, as shown in Figure 1 is a concave-shaped ingot mold cavity blood side 1 / 4 section diagram. Let the center section of O, concave arc center O, arc center rotation. Arc tangent arc and concave corners in B, a known center of the blood-gon. The distance to the edge of a, concave radius R, the corner radius r and angular mouth,
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, we can see from Figure 1: Figure l concave curved section of concave-shaped ingot mold cavity blood gon angle area F = 2n ・ (△ 00l02 area F1 a fan O1BC area F2 + fan 02AB area) (1) Find the F1 = Kyrgyzstan 0O1 ・ O2E set 0O102 to 1,
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, / 'OO2O1 for the L2, (L2 to blunt a 33 - \LD020l for the L3, the △ OOl02, according to Sine threat n2 == 001 = and a + Rsin. . _. L2 = l8-in (1) in 2, (30l02 in, l + port + L2 = 180,... L = 180. One of a L2 (2) in the rectangular convex olEOz in OzE = OlO2sinL1: (r + R) sinL1 ,. _.Fl = ool ・ O2E: '(n + R) ・ (r + R) sinl (2) seeking F2F2 = din (3) Find the F3f3 = 33 = + lF3 = Ka is concave \area of F = 2n ・ (F1 A F2 A F3) = 2n [{(+ R) (r + R) sinl a +360] (3) 360 '.. ... Equation (1), (2), (3 ) is the new formula are derived. 2 Application examples octagonal curved concave shape 25t ingot mold, a known face in the mouth under = 560mrn, R: l020mm, r = 50into,. = atrazine = 22.5,
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, find the end area. according to the formula (1) L2_I80 an arcsin = 145.59. According to the formula (2) l = 180. a 225. a 145.59 == 11.9l. According to the formula (3) F = 2 × 8 × [{ (560 + l020) × (50 + l020) s91 a J. (221 :±!:,
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。 360. = 1073058.6 (mrrl2). Author: zygomatic Ping Fu (1967).. M, Shandong Laiwu, engineers , Arts. daughter-Gok \. practice is carried on the traditional divisions in the gold of manganese, bred pressure modification to optimize the heat treatment process in the austenite matrix to obtain uniform dispersion of carbide microstructure. In a typical impact wear conditions, the use of life is 1.5 times of high manganese steel, and lower costs. Keywords All Lan: Lan Tong Zhu Lan sit well in the ring for the 1I Key words: TG269 Document code: B 』InvestigationandApplicationofStrengthtoughnessWear-resistanceSteelZGMn8Cr2TiRESHAO chu an ping {Qingd80sjE1ectrlcCastingPlant, Qingdao266500. China) 1 Melting development conditions and equipment for major equipment of a 0.5 GW alkaline medium frequency induction furnace. with titanium, rare earth conceived of liquid steel in the modification. baked temperature l480 ℃ ~ l500 ℃, pouring temperature is l430 ℃ ~ l450 ℃. chemical analysis equipment SPECrROCAST direct reading spectrometer. sample and test block the production of hardened water glass shape of quartz sand. magnesia powder coating for the alcohol-based coating, the samples FM141.2, 3 fan mill impact plate, Z1414 wavy liner, saddle l0 test block and other parts. sample heat treatment equipment and the test block using box-type resistance furnace R | 2.180-9. 2 chemical composition is as follows 1.12% C: 068% Si; 7.50% Mn; 0.08% P; 0.03% S: 2.10% Cr; 0.13% Ti. 3 heat treatment process,
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, see Figure 1.7 Police llllhj25h Figure l heat treatment of a curve Q / h
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