摘要:

AbstractThis paper reports the development and testing of a rotary screw compressor lubricant based on two‐stage severely hydrotreated petroleum base oil, and compares the fluid's performance with that of a synthetic polyalphaolefinbased compressor fluid. It was found that performance was in most respects the same for both fluids. Laboratory and performance testing also shows equivalent extended service life greater than one year, with reduced maintenance and energy saving

ISSN:0265-6582    

DOI:10.1002/jsl.3000070402

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractFor the liquid products of the oligomerisation of C3‐C12alphaolefins the values of poles of the Walther viscosity dependencies have been found to be a function of monomer size and oligomerisation initiation system. In this paper some new relationships are described that have been found between the value of kinematic viscosity and average number molecular weight. These dependencies allow definition of the functional relationship between kinematic viscosity, size and structure of oligomer and temperature; a program can be written for rapid and sufficiently precise determination of viscosity‐temperature dependencies and average number molecular weights, both for fractions and for mixtures of alphaolefin oligom

ISSN:0265-6582    

DOI:10.1002/jsl.3000070403

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractReliable laboratory simulation of the tribological conditions that lubricated sliding bearings face in the field requires the use of computer assisted test procedures. The example of lubricated plastic bearings given here illustrates the use of relational database systems combined with automated data analysis, and shows its relevance for practical applications.To predict the functioning of lubricated platic bearings, a multiple of test procedures and laboratory methods are necessary due to the large variety of synthetic lubricants and the multiple of plastics. Each test procedure generates a considerable amount of individual data. From these data, the information relevant for each particular application must be extracted. This procedure can be speeded up by using a database, and indeed some of it is only possible with the use of a database. This database acts as the central place for data collection. By using specific commands, with actual parameters acting as filters, the necessary information can be retrieved. The efficiency of tribological testing and its immediate relevance for the field is thereby greatly enhanced.

ISSN:0265-6582    

DOI:10.1002/jsl.3000070404

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

摘要:

AbstractFriction test results for selected properties of lubricating fluids including carboxylic acid esters, phosphate esters and polyglycol water solutions are presented, which indicate that results obtained in a modified four‐ball tester can change with time spent under load. A variety of conditions and materials were teste

ISSN:0265-6582    

DOI:10.1002/jsl.3000070405

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

ISSN:0265-6582    

DOI:10.1002/jsl.3000070406

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

ISSN:0265-6582    

DOI:10.1002/jsl.3000070407

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

ISSN:0265-6582    

DOI:10.1002/jsl.3000070408

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY

ISSN:0265-6582    

DOI:10.1002/jsl.3000070401

出版商:John Wiley&Sons, Ltd    

年代:1991

数据来源: WILEY