The Presidential Address to the Liverpool Engineering Society by Mr. Farthing (the salient points of which are reproduced in this issue) has particular bearing upon lubrication…
Abstract
The Presidential Address to the Liverpool Engineering Society by Mr. Farthing (the salient points of which are reproduced in this issue) has particular bearing upon lubrication and especially on young lubrication engineers. Mr. Farthing stressed the very wide field open to young engineers and the difficulties associated with training in order to cover as wide a field as may be necessary. It is usually so important to gain a wide knowledge before one can specialise and this is certainly the case with lubrication engineers. One cannot begin to fully appreciate the intricacies of a lubrication system with all its accessory components lubricating and guarding, for example, a large motive power plant or rolling mill, until one has more than a mere working knowledge of the plant itself, the duties it must perform, how it performs them and the snags that arise which might be overcome by correct lubrication. In view of the fact that lubrication systems are just as important in a textile mill as in a power station or a large brick works, the almost impossible‐to‐achieve‐range of knowledge that would simplify the work of a lubrication engineer is very obvious. Fortunately, lubricating principles apply to most cases and knowing how to apply one's knowledge from basic principles is the key to success in this difficult profession.
This is a shortened version of the Discussion that took place at Birmingham in January. Part One, which covered Lubricants for the Cold Rolling of Non‐Ferrous Metals and Alloys…
Abstract
This is a shortened version of the Discussion that took place at Birmingham in January. Part One, which covered Lubricants for the Cold Rolling of Non‐Ferrous Metals and Alloys appeared in our February issue.
In the heat treatment of steel, oils are used in three operations: in conventional hardening, in which steel is quenched into oil at or near room temperature (quenching oils); in…
Abstract
In the heat treatment of steel, oils are used in three operations: in conventional hardening, in which steel is quenched into oil at or near room temperature (quenching oils); in hot quenching, in which the steel is quenched into hot oil (martempering oils); and in tempering (tempering oils).
The PROCESS OF MAKING WIRE by drawing operations through dies, as distinct from hammering, though believed to be several thousand years old, until the last century was performed…
Abstract
The PROCESS OF MAKING WIRE by drawing operations through dies, as distinct from hammering, though believed to be several thousand years old, until the last century was performed only by man‐, horse‐ or water‐power, so that production was slow and small. These old methods could not meet the greatly increased demand that then arose for wire of all kinds, such as copper wire for electrical purposes, and consequently power‐driven multi‐die benches were developed. Drawing speeds were still limited to several hundreds of feet per minute because of the rapid wear of the chilled iron and steel dies then used; but with the introduction of tungsten carbide dies and diamond dies, speeds were again increased, and now figures of 2,000 ft. per minute for steel wire, and 5,000 ft. per minute or more for copper and aluminium, are commonplace. These advances have required improved drawing lubricants, and future increases in drawing speeds likewise largely depend on improving lubricants still further. The general problem is to provide adequate lubrication for long die life, coupled with the intensive cooling that higher drawing speeds compel.
OF the whole range of metal rolling operations, almost the only section in which rolling oils are normally employed is in the cold rolling of flat material in plain cylindrical…
Abstract
OF the whole range of metal rolling operations, almost the only section in which rolling oils are normally employed is in the cold rolling of flat material in plain cylindrical rolls. The metal for cold rolling has usually first been hot rolled in plain cylindrical rolls, but only in a few cases are rolling oils used in the hot rolling operation. These exceptions are referred to when considering the particular metals.
DRAWING of metals occurs in innumerable ways, both hot and cold. Here, however, we are concerned only with the cold drawing operations used to form vast tonnages of steel, and…
Abstract
DRAWING of metals occurs in innumerable ways, both hot and cold. Here, however, we are concerned only with the cold drawing operations used to form vast tonnages of steel, and large quantities of non‐ferrous metals, as tube and wire, and for the forming of sheet metals (especially by deep drawing).
Climate change and the COVID-19 pandemic are complex and have multifaceted effects on countries in an unpredictable and unprecedented manner. While both COVID-19 and the climate…
Abstract
Climate change and the COVID-19 pandemic are complex and have multifaceted effects on countries in an unpredictable and unprecedented manner. While both COVID-19 and the climate crisis share similarities, they also have some notable differences. Being both systemic in nature with knock-on and cascading effects that propagate due to high connectedness of countries, COVID-19, however, presents imminent and directly visible dangers, while the risks from climate change are gradual, cumulative and often distributed dangers. Climate change has more significant medium and long-term impacts which are likely to worsen over time. There is no vaccine for climate change compared to COVID-19. In addition, those most affected by extreme climatic conditions have usually contributed the least to the root causes of the crisis. This is in fact the case of island economies. The chapter thus investigates into the vulnerability and resilience of 38 Small Islands Developing States (SIDs) to both shocks. Adopting a comprehensive conceptual framework and data on various indices from the literature and global databases, we assess the COVID-19 and climate change vulnerabilities of SIDs on multiple fronts. The results first reveal a higher vulnerability across all dimensions for the Pacific islands compared to the other islands in the sample. There is also evidence of a weak correlation between climate change risk and the COVID-19 pandemic confirming our premise that there are marked differences between these two shocks and their impacts on island communities.
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Sarah E. DeYoung, Denise C. Lewis, Desiree M. Seponski, Danielle A. Augustine and Monysakada Phal
Using two main research questions, the purpose of this paper is to examine well-being and preparedness among Cambodian and Laotian immigrants living near the Gulf Coast of the…
Abstract
Purpose
Using two main research questions, the purpose of this paper is to examine well-being and preparedness among Cambodian and Laotian immigrants living near the Gulf Coast of the USA, and the ways in which indicators such as sense of community and risk perception are related to these constructs.
Design/methodology/approach
This study employed a cross-sectional prospective design to examine disaster preparedness and well-being among Laotian and Cambodian immigrant communities. Quantitative survey data using purposive snowball sampling were collected throughout several months in Alabama, Mississippi, Florida and Louisiana.
Findings
Results from two multiple regressions revealed that sense of community and age contributed to well-being and were significant in the model, but with a negative relationship between age and well-being. Risk perception, confidence in government, confidence in engaging household preparedness and ability to cope with a financial crisis were significant predictors and positively related to disaster preparedness.
Practical implications
Well-being and disaster preparedness can be bolstered through community-based planning that seeks to address urgent needs of the people residing in vulnerable coastal locations. Specifically, immigrants who speak English as a second language, elder individuals and households in the lowest income brackets should be supported in disaster planning and outreach.
Originality/value
Cambodian and Laotian American immigrants rely upon the Gulf Coast’s waters for fishing, crab and shrimp income. Despite on-going hazard and disasters, few studies address preparedness among immigrant populations in the USA. This study fills a gap in preparedness research as well as factors associated with well-being, an important aspect of long-term resilience.
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Sendzimir mills have already been referred to as notable examples of cluster mills (p. 142 and Fig. 9). They exploit the advantages of well‐supported small diameter work rolls…
Abstract
Sendzimir mills have already been referred to as notable examples of cluster mills (p. 142 and Fig. 9). They exploit the advantages of well‐supported small diameter work rolls, making heavy reductions possible and producing very accurate cold rolled strip. The work rolls can be finished to produce the sheet surface quality required, can be very rapidly changed in service, and can be made of special very hard material such as tungsten carbide when minimum flattening is needed. Accordingly these mills are used for a great variety of materials — not only all types of steel (including stainless), copper and its alloys, and aluminium and its alloys, but titanium, tantalum, zirconium and even rarer or more intractable metals.
IT MAY reasonably be asked “why should metalworking lubricants be considered as a class on their own?” Apart from convenience of classification, there are at least three good…
Abstract
IT MAY reasonably be asked “why should metalworking lubricants be considered as a class on their own?” Apart from convenience of classification, there are at least three good reasons for doing so: