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Article
Publication date: 16 January 2017

Philip Mark Hackney and Richard Wooldridge

Metal casting industry is in recovery phase after the crisis in 2008; customer demand continues to increase, with 98.6 million metric tons cast in 2011. Traditional ferrous and…

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Abstract

Purpose

Metal casting industry is in recovery phase after the crisis in 2008; customer demand continues to increase, with 98.6 million metric tons cast in 2011. Traditional ferrous and non-ferrous casting techniques require one shot or permanent moulds which require tooling to produce. Tooling particularly for developmental projects can be costly and take valuable time to produce. Additive manufacturing (AM) has been used to manufacture sand patterns for metal sand casting using laser sintering and sand bonding. This research aims to focus on characterising the sand-bonded process developed by ExOne GmbhH Germany.

Design/methodology/approach

The approach taken in this research is to evaluate characteristics of parts built in the build volume for dimensional accuracy, tensile and compressive crush strength, density, impact strength and high temperature resistance. These properties are required to compare the 3D sand printing (3DSP) process to direct laser sand sintering (DLSS) and traditional Furan-based casting sand mixtures. The samples were taken from a production machine over a period of 30 days to ensure consistency.

Findings

The 3DSP process has the capability to manufacture sand patterns to an accuracy of ±0.5 mm or error less than 0.3 per cent; it has also demonstrated the best build position to achieve accurate parts. The research has demonstrated the 3DSP patterns are comparable to traditional methods for important casting material characteristics such as tensile, compression and impact strength. It has been shown that the 3DSP process is capable manufacturing significantly larger parts, with build production rates up to 30 times higher compared to similar parts manufactured via the DLSS process.

Research limitations/implications

As they has been very few 3DSP machines sold in Europe and particular UK, they has been little research into this new technique, and, therefore, they is a reliance on machine manufactures data for assessment. This research into 3DSP has increased the knowledge of this process significantly.

Practical implications

This research would be of interest to designers and manufacturing engineers wishing to take advantage of the implications of having new design freedom, tool less manufacturing with short lead times in a wide range of materials using fundamentally tried and tested century’s old casting techniques.

Originality/value

The research for this paper revealed very little published academic research in this area; therefore, this work will increase the body of knowledge for this niche AM process.

Details

Rapid Prototyping Journal, vol. 23 no. 1
Type: Research Article
ISSN: 1355-2546

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Publication date: 1 April 1997

Antony Clark and Alex Appleby

Looks at the growing importance of quality management in local government. Explores the work undertaken in three London Borough Councils and one District Council in Essex which…

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Abstract

Looks at the growing importance of quality management in local government. Explores the work undertaken in three London Borough Councils and one District Council in Essex which are attempting to apply management principles to all areas of their activity. Compares each council using a framework for quality management. Describes the differences in their approaches to implementing quality, exploring why those differences may have come about. Identifies a number of important questions which should be considered when planning any local government quality initiative.

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Leadership & Organization Development Journal, vol. 18 no. 2
Type: Research Article
ISSN: 0143-7739

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Publication date: 1 January 1939

WE offer our readers good wishes for 1939. We hope that every kind of library may be allowed in peace to pursue its development for the spreading of good reading, to the end that…

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Abstract

WE offer our readers good wishes for 1939. We hope that every kind of library may be allowed in peace to pursue its development for the spreading of good reading, to the end that enlightenment and with it wisdom may prevail amongst our millions of readers. We hope too that it will be another year of progress in service, in good and deftly‐employed technique, in the development of the will to make libraries interesting, attractive, useful and indeed inevitable and essential to all men. For librarians we hope it may be a further stage in the promotion of their profession, of growth of their own faith in it, and of increase in the willingness of those who employ librarians in municipalities, counties, colleges and other places to recognize training and service with better pay, prospects and status. We know that appreciation will not give greater willingness to serve; we do know it will give greater happiness.

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New Library World, vol. 41 no. 6
Type: Research Article
ISSN: 0307-4803

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Article
Publication date: 1 February 1968

LOCAL history achieved academic respectability in 1947 with the establishment of the Department of Local History at the University of Leicester. No longer need the local historian…

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Abstract

LOCAL history achieved academic respectability in 1947 with the establishment of the Department of Local History at the University of Leicester. No longer need the local historian feel ashamed of his craft or regard himself as a writer of footnotes to another's history.

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New Library World, vol. 69 no. 8
Type: Research Article
ISSN: 0307-4803

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Article
Publication date: 1 December 1900

In 1899 the medical practitioners of Dublin were confronted with an outbreak of a peculiar and obscure illness, characterised by symptoms which were very unusual. For want of a…

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Abstract

In 1899 the medical practitioners of Dublin were confronted with an outbreak of a peculiar and obscure illness, characterised by symptoms which were very unusual. For want of a better explanation, the disorder, which seemed to be epidemic, was explained by the simple expedient of finding a name for it. It was labelled as “beri‐beri,” a tropical disease with very much the same clinical and pathological features as those observed at Dublin. Papers were read before certain societies, and then as the cases gradually diminished in number, the subject lost interest and was dropped.

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British Food Journal, vol. 2 no. 12
Type: Research Article
ISSN: 0007-070X

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Article
Publication date: 1 November 1938

THE regular search for the good book for the child will continue so long as there are children's libraries. A recent report on an enquiry has reached us from Bethnal Green and…

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Abstract

THE regular search for the good book for the child will continue so long as there are children's libraries. A recent report on an enquiry has reached us from Bethnal Green and follows the familiar lines of getting the children to vote on what they like; with the result that the “William” books, which should be making all concerned in their production a fortune, head the list, and the simple “small”‐child books, the Milly‐Molly, Mandy series, come next. The field surveyed was small, for “William” polled only 34 votes; only 800 of the 6,000 children registered as borrowers participated. It is questionable if such enquiries, however much they interest us as librarians, can effectively help to improve child reading, unless some method of finding and providing high literature in the type the youngsters prefer can be devised. Mr. George F. Vale prefaces his brief list of books chosen with a really interesting discussion on the subject, but a quotation from it indicates part of the problem. He writes, speaking of Tom Sawyer, Alice and The Wafer Babies, “What elements go to make a permanent children's book is one of the mysteries of literature, but evidently these books possess some quality which overrides all the chances and changes of time. It is not merely the appeal of a good story; there are many better stories than The Water Babies. The secret seems to be some mysterious rapport between the author's mind and that of the readers, an ability to see and to think upon the level of the child mind.” All this is true, but it is more than that, we think; it is the power of recording what is, has been or may be, within the child's own range of experience; that is, it is true in that it realises the conditions of the world of childhood. It is curious, and possibly significant, that a book for children in these enquiries means a story. An enquiry is overdue into the type and quality of non‐fiction read by them, the sort of child who reads and in what circumstances: Real information here might reveal gaps and surpluses in book provision that are not now widely recognized!

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New Library World, vol. 41 no. 5
Type: Research Article
ISSN: 0307-4803

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Article
Publication date: 1 August 1907

It is not proposed here to treat the sheaf catalogue from a controversial point of view, and to enter into a detailed examination of the respective advantages and disadvantages of…

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Abstract

It is not proposed here to treat the sheaf catalogue from a controversial point of view, and to enter into a detailed examination of the respective advantages and disadvantages of this as compared with other forms of catalogues. Many are alive to the merits of the sheaf catalogue, either as the only means of displaying and indexing the contents of a library, or as an addition to some already existing means, and it is for the use of these that the following practical notes on the making of a sheaf catalogue are submitted.

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New Library World, vol. 10 no. 2
Type: Research Article
ISSN: 0307-4803

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Article
Publication date: 1 April 1909

THE title of this short paper is somewhat of a misnomer, as the German Volks bibliothek is not the same as an English Public Library. As Dr. Schultze says: “When we speak of an…

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Abstract

THE title of this short paper is somewhat of a misnomer, as the German Volks bibliothek is not the same as an English Public Library. As Dr. Schultze says: “When we speak of an English Public Library we know exactly what is meant, but the German Volks bibliothek does not convey any definite impression. Too often it still means a very small collection of books, probably gifts which are accessible to borrowers at certain hours each week. As a rule, the revenue is so trifling that after paying the small working costs there is little or nothing left for buying books.” Taking, therefore, the term Public Library for the sake of convenience, we may assume that the first Public Library in Germany was opened in Hamburg, in 1529, as the result of Luther's recommendation (1524) “that good libraries, especially in the large towns, should be established.” At the beginning of the 18th century, a number of free libraries were established, these were usually connected with churches and schools, yet their very name “free” seemed an invitation to everyone to share the treasures they contained. These libraries were principally in central Germany and Saxony.

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New Library World, vol. 11 no. 10
Type: Research Article
ISSN: 0307-4803

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Article
Publication date: 1 October 1900

The latest information from the magazine chemist is extremely valuable. He has dealt with milk‐adulteration and how it is done. His advice, if followed, might, however, speedily…

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Abstract

The latest information from the magazine chemist is extremely valuable. He has dealt with milk‐adulteration and how it is done. His advice, if followed, might, however, speedily bring the manipulating dealer before a magistrate, since the learned writer's recipe is to take a milk having a specific gravity of 1030, and skim it until the gravity is raised to 1036; then add 20 per cent. of water, so that the gravity may be reduced to 1030, and the thing is done. The advice to serve as “fresh from the cow,” preferably in a well‐battered milk‐measure, might perhaps have been added to this analytical gem.

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British Food Journal, vol. 2 no. 10
Type: Research Article
ISSN: 0007-070X

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Article
Publication date: 1 September 1949

Forty‐six milks were submitted for analysis. Five of these were reported against for added water or fat deficiency. The leaky churn appeared on the scene in one case, but this did…

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Abstract

Forty‐six milks were submitted for analysis. Five of these were reported against for added water or fat deficiency. The leaky churn appeared on the scene in one case, but this did not save the vendor from fine and costs amounting to over thirteen pounds.

Details

British Food Journal, vol. 51 no. 9
Type: Research Article
ISSN: 0007-070X

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