Fabricated Metal Products Research Articles

Rola zagranicznej wartości dodanej w tworzeniu przewagi komparatywnej Polski w światowym eksporcie towarowym

The paper deals with changing approach to measuring trade an competitiveness due to the widely spread process of international fragmentation of production process which makes it much more difficult to assess origin of products in international trade. Therefore a method was developed to use foreign and domestic value added in order to evaluate country's role in world trade as well as its comparative advantage. Authors apply this methodology to Polish trade in goods in 1995-2009 and reveal that for- eign components were an important part of its exports. Poland was highly dependent on foreign value added from European Union countries, especially Germany. Sectors with highest shares were: transport equipment, electrical and optical equipment, basic metals and fabricated metal products, chemicals and non-metallic mineral products. Foreign value added also affected Poland's comparative advantage - its impact on various industries was adverse. In some cases it improved RCA indexes while in others using domestic value added for the calculations resulted in a larger comparative advantage.

0378 Occupational exposure to carcinogens in New Zealand

ObjectivesTo provide a detailed assessment of the extent and industrial distribution of workplace carcinogens in New Zealand, and to identify key industries and key carcinogens for which intervention would result...

EFFECTS OF CHINA AND INDIA ON MANUFACTURED EXPORTS OF THE G7 ECONOMIES

This article analyzes the effects of China and India on manufactured exports of the G7 economies. The following three findings stand out. First, the rivalry effect of China is robustly significant in all investigated markets, including the world and the G7 countries collectively and individually, while the rivalry effect of India is significant in the French, Italian, Japanese, and world markets but insignificant in other markets. Second, the rivalry effect of China in the world market is substantial in 13 of 22 manufacturing industries, and most pronounced for textiles, telecom equipment, fabricated metal products, computing machinery, and furniture, while this effect of India is significant only in one industry (basic metals). Third, Germany is the only G7 economy that appears not to be affected by China's rivalry effect. Germany has also been more successful than other G7 economies in penetrating the Chinese market. (JEL O4, F1)

Springback in Sheet Metal U Bending-Fea and Neural Network Approach

All the forming processes are more or less prone to the springback depending upon different material properties and process parameters. Bending processes are very widely used in the manufacturing of sheet metal products, particularly in automobile industry. It is a well known fact that when sheet metal is formed, it does not form the desired shape because of the springback. In the present paper the springback is predicted by using finite element analysis, for various die radii, sheet thicknesses, R/t ratios and strength coefficients, for two different materials. The simple neural network is used to map the springback obtained from finite element analysis. The results obtained by FE simulations compared with simple neural network are found in good agreement.

39 Prevalence of selected health issues among workers in small scale industries in a district in Sri Lanka

Prevalence of selected health issues among workers in small scale industries in a district in Sri LankaObjectivesTo assess the prevalence of selected health issues among workers, in small scale industries...

38 Occupational hazards in some selected small scale industries in a district of Sri Lanka

Occupational hazards in some selected small scale industries in a district of Sri LankaObjectiveTo identify occupational hazards in the work environment in small scale industiries in a district of Sri...

36 Occupational health services for small-scale industry workers in a district of Sri Lanka

ObjectivesTo describe the provision of occupational health services to workers in small scale industries in a district of Sri LankaMethodsA cross-sectional study was conducted among workers in selected small scale...

26 Nationwide machine safety initiative for small metal fabrication businesses

Machine-related injuries are a persistent risk for workers in fabricated metal products manufacturing. Smaller establishments are of particular concern because these firms typically have limited access to safety and health...

Manufacturing of Geared Sheet Metal Components Using Flexible Rolled Tailored Blanks

Manufacturing of functional sheet metal products with integrated gear teeth by form-ing can be realised with the application of bulk forming operations on sheet metals. Due to the desired part geometry simultaneous 2D and 3D stress and strain states occur during the forming operations. The main challenges of sheet-bulk metal form-ing are high resulting forming forces and the demand on a specific control of the material flow. In addition, there is a distinctive interaction between blank thickness and resulting part quality. To meet these challenges at high material efficiency, the application of tailored blanks with a defined sheet thickness distribution is a promising way. The process adapted semi-finished used in the presented work are formed by a flexible rolling process. First of all, the forming concept for the realization of geared sheet metal components using flexible rolled tailored blanks is presented. Afterwards, the developed rolling machine to produce rotational symmetric tailored blanks is shown, as well as the fundamental process influences during rolling. Based on that, the development of suitable process strategies to produce tailored blanks with a thickened sheet edge is presented. The further processing of those tailored blanks for the realization of external geared sheet metal components will show the advantages compared to the application of conventional sheet metals of constant sheet thickness. Therefore the concept of a combined deep drawing and ironing process is presented. The results show, that on the one hand the material efficiency is increased in comparison to the usage of conventional sheets of the same maximum thickness. On the other hand, the application of flexible rolled tailored blanks improves the accuracy of shape of the gear teeth. Both approaches prove that the application of flexible rolled is an appropriate procedure to enhance the limits of using conventional sheet metals within sheet-bulk metal forming.

Technology for obtaining metallized sinter

Three main types of raw materials are used in the manufacture of metal products: liquid and solid conversion pig iron, steel scrap, and (in smaller amounts) metallized materials based on iron ore. The production and consumption of these materials are closely interrelated and in large part determine the situation in the world market with respect to both metallur

뉴 노멀 시대하 한국기업의 R&D투자가 산업간 기술파급에 미치는 영향

본 연구는 금융위기 이후 새로운 질서로 부상되고 있는 뉴 노멀 시대하 한국 기업의 R&D투자가 각 산업에 미치는 기술파급효과를 생산유발효과, 전후방연관효과, 기술집약효과, 기술확산효과를 통하여 분석하였다. 분석결과 먼저, 생산유발계수가 높은 부문으로는 전문과학 및 기술서비스, 금속제품, 일반기계 등인 반면 비교적 작은 부문으로는 석유 및 석탄제품, 전력, 가스 및 수도 등으로 나타났다. 또한, 산업간 전 후방연관효과를 나타내는 감응도계수와 영향력계수는 비금속광물제품이나 수송장비 등의 부문에서 비교적 높게 나타나 이들 산업을 중심으로 R&D투자를 통한 기술혁신과 생산성 증대가 이루어진다면 여타 산업에 큰 파급효과를 유발하게 될 것으로 보인다. 기술파급효과인 R&D집약효과와 확산효과에서는 두 효과 모두 비교적 높은 부문은 전기 및 전자기기, 정밀기기, 그리고 전문과학 및 기술서비스부문으로 이들 산업으로부터 많은 기술이 체화되어 이전되고 있음을 알 수 있다. 특이한 사항으로 최근에 각광받고 있는 과학전문 및 기술서비스업은 집약효과 및 확산효과 모두에서 높은 R&D투자효과를 보여주고 있어 앞으로 이들 산업의 육성이 필요시 된다고 하겠다. The purpose of this study is to examine the impact of enterprise R&D investment on inter-industry technology spillover in Korea under the new Normal Era. In order to do this, we tested the effect of production inducement, backward and forward linkage effects, and the effect of technology spillover such as technology intensity effects and technology diffusion effects based on an input-output framework. The results show that the high index industries of the production inducement effect were professional, scientific and technical activities, manufacture of metal products, and general machinery. Some manufacturers of other non-metallic mineral products and transport equipment sectors appeared to have the strong effect of forward and backward linkages that were almost equivalent to high-tech manufacturing industries. In particular, the industries of professional, scientific and technical activities appeared to have the strong effect of both forward and backward linkages. Therefore, we need to drive a strong policy support to higher enterprise R&D investment in the those particular industries not only to increase global competitiveness, but also to widen up the technology spillover effect on other industries.

EVIDENCE OF THE ENVIRONMENTAL KUZNETS CURVE: IMPLICATIONS OF INDUSTRIAL TRADE DATA

This study examines the dynamic relationship between CO2 emissions and economic growth in Malaysia for the period of 1980-2004. The evidence of the Environmental Kuznets Curve (EKC) is tested by including energy consumption, dirty export from Malaysia to China and dirty import from China to Malaysia based on the two and three-digit ISIC data which reflect pollution-intensive manufacturing. Using dirty industries for the period of 1980-2004, the existence of Pollution Haven Hypothesis (PHH) was tested by employing ARDL approach of cointegration and the Fully Modified Ordinary Least Squares (FMOLS). Six out of eight dirty industries are found to show statistically significant inverted U-shaped relationship between CO2 emissions and economic growth, thus the EKC. Export from industries such as textile, wearing apparel and leather, manufacture of fabricated metal products and electrical machinery significantly increase CO2 emissions in Malaysia. Most of the import coefficients are significant and positively related to CO2 emissions, which is in contrast to the PHH. This strongly rejects the PHH for CO2 emissions in Malaysia-China trade. There is no evidence that domestic production of pollution-intensive goods in Malaysia is being replaced by imports from China. Based on the analysis, Malaysia-China bilateral trade increases CO2 emissions in Malaysia. There is therefore urgent need that electricity generation in Malaysia is from clean and sustainable sources. There have been efforts by the Malaysian government towards achieving this objective through its many related policies introduced since the beginning of this new millennium.

유해위험방지계획서 적용에 따른 업종별 비용편익효과 분석

주요 설비를 설치 이전하거나 구조부분을 변경하기 전에 안전성을 심사 확인하여 이들에 대한 근원적인 안전성을 확보하기 위해 고용노동부는 제조업 유해 위험방지계획서 제도를 1982년부터 시행하고 있다. 그러나 주요 산업재해를 발생시키고 있는 취약업종이 제도 적용 대상에서 제외되어 근원적인 재해예방에 한계가 있다. 이러한 제도의 한계를 해결하고자 유해 위험설비의 대상업종 8개를 선정하여 이에 따른 비용편익을 분석하였다. 비용편익 분석방법은 정책 실행수단을 선택하거나 정책의 기대효과를 추정하기 위한 가장 기초적인 분석방법으로, 규제 실행의 정당성을 입증해 주는 기본 자료로서 활용하였다. 분석 결과 1차 금속 제조업의 편익이 가장 크게 나타났으며 다음으로 자동차 및 트레일러 제조업, 기타 제품 제조업, 기타 기계 및 장비제조업, 목재 및 나무제품 제조업, 고무제품 및 플라스틱 제조업, 식료품 제조업, 가구 제조업 순으로 높게 나타났다. 따라서 국가경쟁력을 강화하며 근로자의 신체와 생명을 보호하고, 재해나 사망으로 발생되는 사회적 비용을 저감시켜 국가 전체의 후생수준을 증대시키기 위해 8개 업종으로 유해 위험방지계획서의 작성을 확대할 필요가 있다. From 1982, the Korean Ministry of Employment and Labor has executed the risk assessment regulation for manufacturing industries. When a manufacturing company install, transfer, or modify the major facilities, the program inspects and verifies safety of the working place to ensure safety against risks. This study performed cost-benefit analysis of the program for the eight industrial categories that were free from the program. The cost-benefit analysis is the basic method to estimate the effect of the policy execution, and used to justify the policy effectiveness. As a result, there is the biggest benefit in the manufacture of basic metal products and then motor vehicles, trailers and semitrailers, other manufacturing, other machinery and equipment, wood products of wood and cork, rubber and plastic products, food products, furniture in order. Thus the hazard prevention program should be applied into the 8 industrial categories in order to strengthen national competitiveness, protect labors's safety, reduce the social cost and improve the welfare.

Effects of heat treatment on the phase transformation in powder metallurgical multi‐functional coating

AbstractHeat treatment is an important part of the manufacturing of metallic products, especially in powder coating processes. It provides an efficient way to improve the properties of the metal as e.g. hardness by controlling the rate of diffusion and the rate of cooling within the microstructure. The process‐integrated powder coating by radial axial rolling of rings is a new hybrid production technique which is introduced in [1]. The applied temperatures in hot rolling are within the range of austenitizing temperatures for the investigated steels [2]. Therefore, reasonably controlling the temperature is an important task [3]. The paper is concerned with the integration of heat treatment of the rolled ring into the subsequent cooling process. (© 2012 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)

The Contribution Analysis of Science and Technology Service Industry of Shenyang to Manufacturing Industry - Based on Clustering Analysis on Direct Consumption Coefficient

Based on the direct consumption coefficient, using the clustering analysis technology, our studies have showed that the contribution of science and Technology Service Industry to six industrial categories of the smelting and mangling process of ferrous metal six industrial categories was lower. The contribution to four industry categories of electrical machinery and equipment manufacturing industry focused on the scientific and technological exchanges and promotion services; while the contribution of technology services to the petroleum processing, coking and nuclear fuel processing industry is not enough, its distribution is more balanced and reasonable. The contribution to the fabricated metal products industry is focused on scientific and technological exchanges and promotion. The contribution of general equipment manufacturing industry is focused on the development of researches and experiments and professional and technical service.

FINANCIAL DISTRESS AND INDUSTRY STRUCTURE: AN INTER-INDUSTRY APPROACH TO THE LOST DECADE IN JAPAN

This paper proposes a novel approach to investigating the propagation mechanism of balance sheet deterioration in financial institutions and firms, by extending the input–output analysis. First, we use a unique input–output table augmented by firm size dimension. Second, we link the input–output table with the balance sheet conditions of financial institutions and firms. Based on Japanese input–output tables, we find that the lending attitude of financial institutions affected firms’ input decision in the late 1990s and the early 2000s. Simulation exercises are conducted to evaluate the effects of changes in the lending attitude toward small firms as favorable as that toward large firms on sectoral allocations. We find that output was increased for small firms and reduced for large firms. The change in output was non-negligible, about 5.5% of the initial output of each sector. In particular, it exceeded 20% in textile, iron and steel and fabricated metal products.

Hexavalent Chromium Compounds in the Workplace: Assessing the Extent and Magnitude of Occupational Exposure in Italy

Hexavalent chromium (Cr(VI)) compounds have been classified as carcinogenic to humans. This study evaluates the extent and magnitude of occupational exposures to Cr(VI) in Italy. Data were collected from exposure registries of companies compulsorily notified by the National Workers’ Compensation Authority. Each measurement was characterized by economic activity sector, work force size, worker personal data, job description, year of measurement, and level of exposure. Descriptive statistical analysis was carried out on the retrieved information. The number of workers potentially exposed was estimated for some industrial sectors. A mixed-effects model was adopted to evaluate the association between exposure variables and exposure concentrations. Over 8400 measurements of Cr(VI) exposures were selected from the database of registries for 1996–2009. Most exposures occurred in the manufacture of fabricated metal products (>50%), and the occupational group most frequently measured was metal finishing-, plating- and coating-machine operators (>52%). Measurements were associated with various Cr(VI) compounds, including chromium trioxide, potassium dichromate, sodium dichromate, strontium chromate, and zinc chromate. Cr(VI) exposure has decreased in more recent years, and the fixed-effects (Cr(VI) compound, activity sector, size and location of the facility, job category, and year of measurement of the final statistical model explained more than 70% of the variance in the observed exposure data. This study summarized data recorded in the Italian occupational exposure database and identified specific exposure patterns to Cr(VI). The mean level of exposure to Cr(VI) was 30.41 μg/m3, and 50,118 workers were estimated at exposure risk in the selected industrial sectors. Systematic recording of occupational exposures is a source of data that allows recognition of high risk situations and improvements in exposure assessment for epidemiologic studies.

Home Market Effects of Foreign Trade in China's Manufacturing Sector: Analysis Using International Standard Industry Classification Panel Data

AbstractIn this paper, we use 2002–2008 International Standard Industry Classification two‐digit bilateral trade panel data for manufacturing industries in China and the OECD countries to test for the existence of home market effects. We find that significant home market effects exist in 8 out of 12 industries. These industries include the food, beverage and tobacco industry, wood products, the paper products and printing industry, chemical products, other non‐metallic mineral products, machinery and equipment, transport equipment, and miscellaneous products and waste resources recycling industry. Textile, clothing and leather manufacturing, oil refining and nuclear fuel manufacturing, rubber and plastics, and basic metals and fabricated metal products industries do not exhibit home market effects. Indeed, strong reverse home market effects occur for oil refining and nuclear fuel manufacturing and for the rubber and plastics industry. The empirical results reveal that certain industries benefit from new export opportunities due to the expansion of domestic demand in China.

Clustering economic sectors in China on a life cycle basis to achieve environmental sustainability

To improve material efficiency, industrial structure optimization becomes a focal point in Chinese industrial and environmental policies. It is crucial to cluster economic sectors and determine their priority for industrial and environmental policy implementation. Integrating a set of criteria, a hybrid input-output model and the hierarchical cluster analysis, this study clusters China’s economic sectors and determines their priority on a life cycle basis. China’s economic sectors are clustered into three clusters. Industrial structure changes (industrial policy) should encourage the development of sectors in cluster 1 and limit the development of sectors in cluster 2. Technology development and materials recycling (two environmental policies) should mainly focus on sectors in clusters 1 and 2. Future industrial policies in China should limit the development of two sectors named Manufacture of metal products and Extraction of petroleum and natural gas. Instead of limiting some industries by command-and-control, the best policy option is to remedy environmental standards and law enforcement. Enterprises belonging to the identified key sectors from the viewpoint of direct production impacts should be concerned to achieve enterprise sustainability. To achieve sustainable production chains, the identified key sectors from the viewpoint of accumulative production impacts should be concerned. For sustainable consumption, the identified key sectors from the viewpoint of consumption impacts should be concerned to transform consumption styles. Most of environmental pressure can be alleviated not only by technical improvements and material recycling, but also by the development of economic sectors in cluster 1.

Manufacturing of Sheet Metal Components with Variants Using Process Adapted Semi-Finished Products

Manufacturing of functional sheet metal products by forming can be realised with the application of conventional bulk forming operations on sheet metals. The challenges of those sheet bulk metal forming processes are high resulting forming forces and the demand on a specific control of material flow. To meet these challenges well-directed thinning of blanks as well as accumulations of material to form functional elements is employed. Due to local loads, simultaneous 2D and 3D stress and strain states occur. Process adapted semi-finished products, containing a defined sheet thickness characteristic, are formed in the presented work by the technologies upsetting and orbital forming. Orbital forming is an incremental bulk forming operation to decrease the forming zone extension and consequently the required process force. Afterwards a process combination of deep drawing and upsetting in order to manufacture a cup-shaped workpiece with external gearing is presented. The results of this integrated single-stage forming process are discussed and subsequently the potential to enhance the process limits is shown by using process adapted semi-finished products.