resistance spot welding defects ppt

Ngày tải lên: 27/06/2014, 08:20

... shows a resistance spot weld nugget compared to a gas tungsten-arc (TIG) spot weld. RESISTANCE SPOT TUNGSTEN ARC SPOT Figure 4-1. Resistance And TIG Spot Weld Comparison The gas tungsten-arc spot ... the various parts of the resistance spot welding machine are identified. UG-003 335 Page 6 SECTION 4 − FUNDAMENTALS OF RESISTANCE SPOT WELDING 4-1. Principle Resistance welding is accomplished ... Of Resistance Spot Welding Y SPOT WELDING can be hazardous. Read and follow Safety Section at front of this book as well as the Owner’s Manual and all labels on the equipment. Resistance spot welding...

Ngày tải lên: 25/01/2014, 20:20

Ngày tải lên: 20/06/2014, 17:20

Ngày tải lên: 27/06/2014, 05:20

Ngày tải lên: 27/06/2014, 17:20

Ngày tải lên: 27/06/2014, 18:20

Ngày tải lên: 07/08/2014, 03:22

Ngày tải lên: 10/08/2014, 21:23

Ngày tải lên: 11/08/2014, 12:20

Ngày tải lên: 11/08/2014, 12:20

... mối (butt welding) Hàn siêu âm (ultrasonic welding) Hàn nổ Hàn nguội Hàn điện tiếp xúc (contact welding) Hàn ma sát (friction welding) Hàn khuyếch tán trong chân không Hàn cao tần Hàn rèn Hàn điểm (spot ... Tan Tien Tien - - Phan Phan Hoang Long Hoang Long + + H H à à n n đi đi ể ể m m ( ( spot welding spot welding ) ) S S ơ ơ đ đ ồ ồ h h à à n n M M á á y y h h à à n n b b ấ ấ m m M M á á y y h h à à n n b b ấ ấ m m x x á á ch ch tay tay General ... H H à à n n đư đư ờ ờ ng ng ( ( seam welding seam welding ) ) S S ơ ơ đ đ ồ ồ h h à à n n M M á á y y h h à à n n đư đư ờ ờ ng ng 1 Đ Đ 4. 4. H H n n ( ( welding welding ) ) General Mechanical...

Ngày tải lên: 23/12/2013, 07:19

... Robot for Lattice Type of Welding Line”, KSME International Journal, Vol. 16, No. 1, pp. 83-93, 2002. [6] B.O. Kam, Y.B. Jeon and S.B. Kim, ”Motion Control of Two-Wheeled Welding Mobile Robot ... [7] Y.B. Jeon, B.O. Kam, S.S. Park and S.B. Kim, ”Seam Tracking and Welding Speed Control of Mobile Robot for Lattice Type of Welding , Proc. of the 6 th IEEE Int. Symposium on Industrial Electronics , ... HCM, Việt nam, pp. 7-14, tháng T 2002. [2] Nguyễn Tấn Tiến và đồng sự, ”Control of Two-Wheeled Welding Mobile Robot: Part II – Dynamic Model Approach, Hội nghị Khoa học và Kỹ thuật lần thứ...

Ngày tải lên: 17/01/2014, 06:20

... pushes towards you, G -Spot Guide G -spot is the nickname for the Grafenberg spot, named after the guy who noted its erotic significance in the 1950's. The G -spot in women is analogous ... find a slightly raised area. This is the G spot. It might not be raised, but it will engorge once your female starts to come. Don't poke this spot yet. Don't do anything with it, ... had this theory that there was an area within the vagina, which was called the Grafenberg spot or G -spot, which not only was sexually sensitive but which could trigger bigger and better female...

Ngày tải lên: 17/01/2014, 16:20

... Lamellar Tearing from Welding WELDING AND COATING METALLURGY2 34 of 69 FOR INTERNAL USE ONLY 13 WELDING PROCEDURAL GUIDELINES Choose - Surfacing consumable - Welding process WHAT ... with welding. WELDING AND COATING METALLURGY2 16 of 69 FOR INTERNAL USE ONLY In carbon or carbon-manganese steels (i.e., those with steep hardening curves as shown in Figure 35!!) welding ... meet stringent property requirements as well as avoiding cracking and other defects during welding. WELDING AND COATING METALLURGY2 44 of 69 FOR INTERNAL USE ONLY Figure 16...

Ngày tải lên: 24/01/2014, 00:20

... tăng. Những vi rút gây nhiều thiệt hại cho nghề nuôi tôm sú là vi rút gây bệnh đốm trắng (White Spot Syndrome Virus - WSSV), vi rút gây bệnh còi (Monodon Baculovirus - MBV), vi rút gây bệnh đầu ... Black, K. A Mccoll, R. A. J. Hodgson, and E. M Bernorth. 2004. Survey for the presence of White Spot Syndrome virus in Australian crustaceans. Australian Veterinary Journal. 82 (4): Khawsak, ... Molecular and cellular Probes. 22: 177-183 Manual of diagnostic test for aquatic animal, 2006. White spot disease. www.oie.int/eng/normes/finnual . Manivannan, S., D.K. Otta, I. Karunasagar, I. Karunasagar,...

Ngày tải lên: 25/02/2014, 02:20

... 1 CONTENTS Introduction Fusion welding 2 Why use welding? 3 Arc welding processes 4 Welding terms 5 MIG/MAG welding 6 TIG welding 10 Plasma welding 17 Welding sheet 18 Welding plate 20 Welding pipes 22 Defects in ... 35 TIG WELDING DATA Typical conditions for TIG weldingTypical conditions for TIG welding Typical conditions for TIG weldingTypical conditions for TIG welding Typical conditions for TIG welding T ... pipes 22 Defects in welds 24 The right gas: MIG/MAG welding 26 TIG welding 29 Welding data: MIG/MAG welding 30 Flux cored electrodes 33 TIG welding 34 Oxy-fuel gas cutting 37 Plasma cutting 44 Safety...

Ngày tải lên: 25/02/2014, 10:20

... printable test result. Example s are: 1. MTB detected; RIF resistance not detected. 2. MTB detected; RIF resistance detected. 3. MTB detected; RIF resistance indeterminate. 4. MTB not detected; RIF not ... indicator of multidrug resistance. International Journal of Tuberculosis and Lung Disease 2000;4(5):481–4. 9Xpert MTB/RIF test for detection of pulmonary tuberculosis and rifampicin resistance (Protocol) Copyright ... rifampicin resistance (Protocol) Copyright â 2012 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd. Xpert MTB/RIF test for detection of pulmonary tuberculosis and r ifampicin resistance...

Ngày tải lên: 06/03/2014, 04:20

... likely to be applicable to welding activities. The general run of welding work on mild steel plate, often with a black surface, will be of very low contrast. Although arc welding is an almost unique ... heat to give toxic fumes. Areas where welding is normally conducted should be kept free from all combustible materials. When it is necessary to undertake welding work in areas not specifically ... aid, including resuscitation techniques, are available. 12 Health and Safety in Welding and Allied Processes – Welding the parent metal, the filler and its flux, shielding gases, the action of...

Ngày tải lên: 06/03/2014, 07:20

... whether the resistance was associated with the overexpression of well-documented resistance- related molecules MDR1, multidrug resistance- associated protein 1 (MRP1), and breast cancer resistance ... in cancer drug resistance research have been made, indicating that ATP-binding cassette transporters play important roles in cancer drug resistance but cannot fully explain the resistance phenomenon, ... 18.78-fold increased resistance to PYM as compared with Tca8113 cells, and cross -resistance to cisplatin, pirarubicin, paclitaxel, adriamycin, and mitomycin. We found that the resistance was not...

Ngày tải lên: 06/03/2014, 22:21

... resistance in Saudi Arabia â 1999 Blackwell Science Ltd 280 both groups, resistance rates remained significantly lower in E. coli isolated from the workers than those from chicken. Multidrug resistance ... despite the similarity of resistance patterns to the tested antibiotics in E. coli-chicken E. coli-patient isolates isolates t-test No. % No. % Drugs tested resistance tested resistance P-value Significance Ampicillin ... such resistance could be either natural or due to poultry as a possible source of the spectinomycin resistance pool for humans. Exposure to antibiotics at work may also contribute to increased resistance...

Ngày tải lên: 08/03/2014, 09:20