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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
191

The Marketing Strategy of Stainless Steel Industry in Mainland China, take Taiwanese Company as Research Sample.

Lee, Chong-Wei 21 July 2004 (has links)
Abstract From 1992, the economy of Mainland China grew up faster, and the supply of stainless steel fell serious short of demand, the sample company will plan to produce at 2005 in China. Our research focuses on their marketing strategy in China, and bases on the research result. We conclude as below: 1. The advantage of culture different ¡@¡@The interaction between Taiwan and Mainland China is very frequently, no matter in commerce activities, political and so on. Related to other foreign companies, the Taiwanese companies get more advantage in culture parts, like same language, living situation and also avoid the culture shake, so, the Taiwanese companies could get more information than the foreign companies. But the companies still pay attention to deal with the localization. 2. The better managerial abilities Related to local companies, the Taiwanese companies have a complete managerial system, for a new comer, it will help company to gain more performance, but the Taiwanese companies still need to keep the organization flexible to hold the competitive advantage. 3. Quality control Related to local company, the Taiwanese companies have perfect manufacture procedure, for a new comer, it will help company to gain best quality, but the Taiwanese companies still need to develop new products continually, to hold the competitive advantage. 4. Product price setting flexible When company sets price in China market, the price setting system should let the customers feel they had been treated fairly and reasonably, when the companies use quantity discount, allowance, payment term system, flexible price will make the customers feel more valuable. 5. Effective in promotion activities When companies hold promotion activities, the salesman should notice the customer¡¦s feeling, they play an important role in face to face presentation, and they have to pass the knowledge and information to customers, the technical personnel and agent also can co-operate the promotion, in charge of new market development and enhance the interaction between the customers and companies. Keyword: Mainland China, SWOT, Marketing Strategy, Stainless Steel Industry
192

A Case Study of Reverse Merger on Steel Industry -An empirical case of Taiwanese Company

Lin, Chun-Yi 07 February 2006 (has links)
Abstract In the global steel industry, some of the regional steel makers start to mergers and acquisitions in order to increase their competitive ability and market share in faces of the crisis that the market share unceasingly glides down. In recent years, the merge and reorganization of steel industry become more popular. It¡¦s to form more professional and bigger group through expanding the productivity, the regional enterprise's merge, the vertical integration and international strategy alliance and so on merge. This research about merger of the H Company and the U Company is not only the first large-scale merge case in the domestic stainless steel industry, but also the first reverse mergers¡¦ case of listed companies and unlisted companies (include emerging stock board companies).It also means the pioneering case in the age. The ¡§reverse mergers¡¨ which above-mentioned plan uses is an item of advanced accounting concept . It mainly focuses on the economical essence of merger, which one can obtain the actual domination and which one is easier to obtain the approval of creditor and supervising institution. Therefore it changed the traditional idea about merger to the public. Integrating with the discussing procedure to above reverse mergers¡¦ case, there are three consolidated problems to be supposedly noticed. Hopefully this research can offer the alternatives to those enterprises that want to pick the merge way through this kind of exterior growth opportunity to expand their competitive ability in the domestic more frequent merge case, and for their reference when they take action concerning reverse mergers. In addition, this research valuation above case¡¦s reasonable intrinsic value by the Discounted Free Cash Flow Model (DCF Model) and the Edwards-Bell-Ohlson Model (EBO Model), and check whether my projection about the stock swap proportion under the DCF model and EBO model are reasonable by making the sensitivity analysis of the price-to-book ratio. The reasonable area of trading the stock swap proportion sector supposedly should be between 4.45 and 4.68 after this research¡¦s calculation by the above two valuation method. However, the proportional difference reaches 38% to 45% with the comparison of the bilateral company resolution 1¡G3.22. Obviously, it was not appropriately responded the intrinsic stock value for both of companies on trading the stock swap proportion, and makes the sensitivity analysis by the price-to-book ratio also to support the DCF model and result of the EBO model computation. Although the bilateral companies still have to considerate a lot of factors to final the stock swap proportion, then they could negotiate the acceptable stock swap proportion. But , the data ,the enterprise value, which was calculated by the relative value approach should still has the reference value.
193

none

Lin, Hong-Ren 25 July 2001 (has links)
none
194

Diffusion in Multiphase and Multicomponent Alloys with Applications to Austenitic Stainless Steels

Schwind, Martin January 2001 (has links)
No description available.
195

Microstructure and properties of modern P/M super duplex stainless steels

Smuk, Olena January 2004 (has links)
No description available.
196

Laser surface alloying of martensitic stainless steel for improved service performance

Adebiyi, Damilola Isaac. January 2012 (has links)
M. Tech. Metallurgical Engineering / Martensitic stainless steel (MSS) metal matrix composite coatings that can accommodate most applications were developed using TiC and stellite 6 as reinforcement powders and Nd: YAG solid state laser for surface alloying. The alloyed surfaces were characterized by means of optical microscopy (OM), scanning electron microscopy (SEM/EDS) and x-ray diffraction (XRD). The microstructures of the alloyed zones show even distribution and super saturation of titanium carbide and other complex carbides of chromium (Cr23C6), niobium (Nb6C5), and iron (Fe7C3) in the matrix of the MSS A significant increase in the hardness was achieved by the addition of stellite 6, although with cracks in the alloyed layer. The cracks formation was due to high heat build-up during the laser alloying process. As a result of the addition of TiC powder in the form of premixed ratio, the heat build-up in the work-piece was minimized. This is due to the high absorptance of laser irradiation by the TiC powder. The alloyed zone of the premixed ratio was free from cracks with microhardness increase of more than 150% of that of the substrate. Multiple tracks of 50% and 75% overlap were fabricated. Three-body abrasive wear study of the overlapped coatings revealed the wear mechanism of the laser coatings to be adhesion, mild abrasive and less degree of deformation showing less plastic ploughing and cutting compared to the as-received. The wear mechanism of the as-received is adhesion, severe abrasive and plastic deformation, showing distinct grooves and damaged spots in the form of craters. The wear resistance of the MMC obtained by alloying with the TiC powder was significantly improved with the 75% overlap, about 90% better than the native material.
197

Corrosion and passivity of 13Cr supermartensitic stainless steel

Ren, Gang January 2011 (has links)
No description available.
198

Hydrogen embrittlement testing of austenitic stainless steels SUS 316 and 316L

Bromley, Darren Michael 11 1900 (has links)
The imminent emergence of the hydrogen fuel industry has resulted in an urgent mandate for very specific material testing. Although storage of pressurized hydrogen gas is both practical and attainable, demands for increasing storage pressures (currently around 70 MPa) continue to present unexpected material compatibility issues. It is imperative that materials commonly used in gaseous hydrogen service are properly tested for hydrogen embrittlement resistance. To assess material behavior in a pressurized hydrogen environment, procedures were designed to test materials for susceptibility to hydrogen embrittlement. Of particular interest to the field of high-pressure hydrogen in the automotive industry, austenitic stainless steels SUS 316 and 316L were used to validate the test programs. Tests were first performed in 25 MPa helium and hydrogen at room temperature and at -40°C. Tests in a 25 MPa hydrogen atmosphere caused embrittlement in SUS 316, but not in 316L. This indicated that alloys with higher stacking fault energies (316L) are more resistant to hydrogen embrittlement. Decreasing the test temperature caused slight embrittlement in 316L and significantly enhanced it in 316. Alternatively, a second set of specimens was immersed in 70 MPa hydrogen at 100°C until reaching a uniform concentration of absorbed hydrogen. Specimens were then loaded in tension to failure to determine if a bulk saturation of hydrogen provided a similar embrittling effect. Neither material succumbed to the effects of gaseous pre-charging, indicating that the embrittling mechanism requires a constant supply of hydrogen at the material surface rather than having bulk concentration of dissolved hydrogen. Permeation tests were also performed to ensure that hydrogen penetrated the samples and to develop material specific permeation constants. To pave the way for future work, prototype equipment was constructed allowing tensile or fatigue tests to be performed at much higher hydrogen pressures. To determine the effect of pressure on hydrogen embrittlement, additional tests can be performed in hydrogen pressures up to 85 MPa hydrogen. The equipment will also allow for cyclic loading of notched tensile or compact tension specimens for fatigue studies.
199

Surface Microstructure Evolution of Metallic Specimens Using the Large Chamber Scanning Electron Microscope

Egbujor, Grace 01 May 2015 (has links)
An initial study into the use of the large chamber scanning electron microscope (LCSEM) to interrogate the surface microstructure evolution of metallic specimens has been carried out. The LC-SEM located at Western Kentucky University is the largest instrument of its type at any university in the world. As such, unique measurements can be performed due to the size of its chamber and extended view of its optic system. Strain was varied for each individual specimen, and imaged using Secondary Electrons within the gauge length as well as near the grip position. Results will show progression of surface microstructures and nickel content of metallic specimens. Additionally, results will demonstrate the capability of the LC-SEM to carry out these types of measurements. Future measurements will include the incorporation of an in-situ uniaxial load frame for dynamic studies.
200

Study on Distortion Control in Nozzle Welding of Stainless Steel Pressure Vessels

Peng, Jinning 06 November 2014 (has links)
The welding of austenite stainless steel often results in large amount of welding distortion due to its high thermal expansion coefficient and low thermal conductivity. This has created great difficulty in the dimensional control of the welded stainless steel structure, ending up with high manufacturing cost. Researches on the welding distortion of stainless steels were very limited, especially for large weld structures with complex component shapes. The studies of this thesis were initiated with focus on the stainless steel nozzle-to-shell-can weld structures, a very typical structural configuration for pressure vessels used in petrochemical and nuclear power generation industries. Both the experimental and the FEA (finite element analysis), i.e. computational simulation, approaches were taken in the studies which addressed the influences of the welding fixture, the welding sequence, and the welding process on the distortion caused by stainless steel nozzle-to-shell welding. The investigations employed single and multi-nozzle weld test models (called mockups in the thesis) or FEA models. Manual GTAW (gas tungsten arc welding) and SMAW (shielded metal arc welding) processes were selected to represent the most common practice for stainless steel nozzle welding. The FEA simulations were conducted with ABAQUS program using sequentially coupled transient analysis method with lumped weld passes to achieve high computing efficiency. The investigations on the effect of the welding fixture concluded that the contour fixtures introduced in the thesis be effective for reducing the welding distortion for both the single and the multi-nozzle welding. The contour fixtures tend to localize the welding distortion, hence yield less impact on the global distortion of the whole weld structure. The rib-bar fixture, a more common fixture type for multi-nozzle welding, was found resulting in a big jump in the shell plate distortion when the fixture was removed. The studies on the influence of the welding sequence revealed that a progressive approach was more favorable for distortion control under the given nozzle-to-shell weld structure configurations. The best sequence suggested is to start welding at one nozzle, firstly on shell OD (outside diameter) side then on ID (inside diameter) side, then proceed to next neighboring nozzle. The effect of the welding direction of each weld pass was found affecting only the nozzle angular distortion. The experimental data showed that the manual GTAW process developed much higher shell plate distortion than the SMAW process. The reason would be that a higher percentage of the welding heat had been consumed on the base metal. The influence of the weld bead size didn???t appear to be significant. In the FEA study on the effect of the size of the lumped weld pass, the increase in weld bead size even resulted in a decrease in weld distortion. From the FEA simulation point of view, using large lumped pass would be a highly efficient choice without compromising too much in the precision of the distortion prediction. The FEA study confirmed that a decrease in cooling time after welding would result in more welding distortion. The large scale multi-nozzle mockup with rib-bar fixture demonstrated a maximum out-of-plane shell distortion of 16.4mm after the welding of 10 nozzles with GTAW+SMAW process, which suggests that additional measures should be developed to further control the welding distortion.

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