Key Technology and Application of Crankshaft Remanufacturing

Liu Mingsheng

Neijiang Vocational & Technical College, Neijiang, Sichuan, 641100, China

Keywords: Crankshaft, Remanufacturing, Key Technology, Research, Application.

Abstract: The development of green manufacturing makes remanufacturing technology more important. If crankshaft

remanufacturing technology can be promoted, its utilization will be enhanced since crankshaft is an

important part of engine. Crankshaft remanufacturing technology is intensively researched in recent years.

The key technology of engine crankshaft remanufacturing is analyzed in this work, achieving the goal of

remanufacturing through construction of evaluation system. Moreover, green manufacturing can be

facilitated through remanufacturing.

1 INTRODUCTION

Crankshaft is an important part of engine with high

loss. Abandoned crankshafts will be constantly

eliminated as wastes in the use of automobile engine.

However, with the development of technology and

environmental protection, green manufacturing has

larger developing space. Meanwhile,

remanufacturing technology is applied widely.

Advanced technology of surface treatment and post

processing can be used on abandoned crankshafts to

realize waste utilization. Therefore, crankshaft

remanufacturing becomes a model of green

manufacturing and makes people pay more attention

to the application of remanufacturing technology.

Consequently, remanufacturing technology is greatly

developed, especially in process of consumable

parts. The application and research on key

technology of crankshaft remanufacturing are

particularly analyzed in this work.

2 CONCEPT AND FUNCTION OF

REMANUFACTURING

TECHNOLOGY

With the development of science technology,

reutilization of resources gradually becomes the

mainstream of manufacturing. Some consumable

parts can be reutilized through remanufacturing to

reduce wastes. Thus, the service life of parts can be

enhanced to reduce costs of production and use.

Therefore, remanufacturing is a mainstream

technology worthy of studying and applying in green

manufacturing and development.

2.1 Concept of Remanufacturing

Remanufacturing is the reprocessing of parts.

Generally, manufacturing is one of the most

important industries in industry. Certain fixing

operation is processed on machine parts in

manufacturing to lay a foundation for post

processing. Therefore, remanufacturing aims at

realizing the reutilization of parts through

reprocessing. The generalized concept of

remanufacturing is reprocessing machine parts for

reutilization. However, process of different machine

parts should be defined differently. For example,

crankshafts remanufacturing in this work adopts

reprocessing and reuse crankshafts.

2.2 Function of Remanufacturing

Remanufacturing is useful for many industries,

especially in manufacturing and production. Some

machine parts become wastes after one use, which

will cause the waste of resources and increasing of

costs. With the spread of environmental protection

idea, advanced technology is expected to realize

remanufacturing in different industries. Thus, costs

can be lowered, and resources can be reused.

Therefore, the function of remanufacturing can be

shown in following aspects.

Firstly, resources recycle and costs control should

be achieved. Recycle, a green idea for long, results

from the exhausted resources. Thus, reutilization

should be more emphasized in resources using.

187

Mingsheng L.

Key Technology and Application of Crankshaft Remanufacturing.

DOI: 10.5220/0006021801870189

In Proceedings of the Information Science and Management Engineering III (ISME 2015), pages 187-189

ISBN: 978-989-758-163-2

187

However, reutilization is the primary stage of

resources recycle. Advanced remanufacturing

technology should be used to guarantee the

maximum utilization of recycled resources.

Moreover, remanufacturing can renew wasted

products. Meanwhile, high technology can reflect the

advantages of remanufacturing in wastes

reutilization during the reprocessing of machine

parts. In this way, the use ratio and value of recycle

will be greatly enhanced. Therefore, cost control in

the industry can be realized to reach the goal of low

cost and high return.

Secondly, long-term development of green

manufacturing should be achieved. Remanufacturing

is an idea rather than a treatment technology. Green

manufacturing, one of the most concerned industries

at present, requires technical support to develop,

where remanufacturing is an essential technology.

Green manufacturing actually uses key technology to

achieve the goal of resources reprocessing and

reutilization. In industry and manufacturing, some

machine parts with high loss cannot be used

continuously after certain abrasion. Besides, metal

parts can be untimely scrapped since they are easy to

rust in surface. However, these abandoned parts can

be reused after remanufactured, which greatly

realizes the idea of environmental protection. The

rise of green manufacturing requires key technology

as support to realize green manufacturing system and

sustainable development.

3 KEY TECHNOLOGY OF

CRANKSHAFT

REMANUFACTURING

As an important part of engine, crankshaft is

frequently changed due to its characteristic of high

loss. Meanwhile, costs will be increased with the

traditional way which treats abandoned crankshafts

as wastes. The development of scientific technology,

particularly in remanufacturing, brings great change

to traditional manufacturing. The problem of cost

increasing and resources wasting, caused by

crankshafts with low utilization, can be solved

through latest remanufacturing technology.

Moreover, this technology can guarantee the normal

working of disposed crankshafts. In this way, the

service life of parts will increase. Thus, cost saving

and resource recycle can be partly realized. Key

technology of crankshaft remanufacturing can be

analyzed in following parts.

Firstly, remanufacturing evaluation criterion

should be made according to crankshaft’s real

operating requirements. Besides, matter-element

approach should be used in construction. This

approach makes corresponding weight distribution,

which realizes remanufacturing technology.

Furthermore, the construction of remanufacturing

evaluation criterion with matter-element approach is

the emphasis of key technology.

Secondly, AHP based on triangular ambiguity

function should be used. The use on weight

distribution in each hierarchy is of vital importance

in remanufacturing technology. Only normative

weight distribution can guarantee the success of

crankshaft remanufacturing technology. Besides,

quantization treatment towards different indexes can

be perfected in ways like accuracy.

Thirdly, automatic surface treatment with high

precision should be realized through information

sharing platform and computer control system.

Surface treatment is an important step in crankshaft

remanufacturing technology. Above all, matter-

element approach should be used to build evaluation

system. Then AHP based on triangular ambiguity

function should also be applied to weight distribution

in each hierarchy. Finally, with the application of

automatic computer operating system, disposed parts

can meet expected requirements.

In short, the emphasis in research of crankshaft

remanufacturing technology is to better apply matter-

element approach and AHP based on triangular

ambiguity function. Then with the accession of

automatic computer operating technology, the key

technology of crankshaft remanufacturing can be

realized. Therefore, expected result can be achieved

to promote the development of green manufacturing.

4 APPLICATION OF

CRANKSHAFT

REMANUFACTURING

TECHNOLOGY

Automobile engine is a precision part, where

crankshaft is one of the most important parts in it. To

guarantee the normal running of cars, accidents

caused by engine should be avoided. Therefore,

crankshaft plays an important role. In above

researches, an evaluation system for remanufacturing

technology has been built. However, what is the

application of crankshaft remanufacturing? What is

the effect of these applications?

4.1 Application Range of Crankshaft

Remanufacturing Technology

Crankshaft remanufacturing technology is more

applied into the reprocessing of crankshafts.

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Advanced technology is used on crankshaft surface

process and post polishing. Thus, can this technology

be applied in other fields? Does it have same effect

and advantage when applied in other fields?

Firstly, the key technology of crankshaft

remanufacturing mainly includes precision process

and surface treatment of machine parts. If recycle

can be realized in crankshaft remanufacturing, this

key technology can be applied in other fields. For

example, for parts which are easy to be abraded on

surface, post process can be realized if their sizes can

be reduced. Thus, the key technology of crankshaft

remanufacturing can be applied in reprocessing of

parts with surface abrasion.

Secondly, crankshaft remanufacturing is actually

a renovating technology because some parts only

abrade surface without affecting inside. Therefore,

crankshaft remanufacturing technology can be used

to renovate some parts. In fact, eliminated parts can

have new effect if their surface rusting is removed

and polished through remanufacturing technology.

Therefore, the key technology of crankshaft

remanufacturing can be applied in renovating fields.

Finally, the technical theory of crankshaft

remanufacturing is a technology of wastes recycling.

The technical theory can be used in the reprocessing

of other eliminated parts. Meanwhile, the key

technology of crankshaft remanufacturing can be

used to realize the process of polish, renovating and

reprocessing. In many circumstances, parts should be

evaluated and processed on labels and specifications

according to evaluation system. Thus

remanufacturing technology can be truly achieved.

4.2 Effect of Crankshaft

Remanufacturing Technology

The key technology of crankshaft remanufacturing

has great effect on its technical theory and

application range. This technology can be applied to

reprocessing engine crankshafts and other similar

parts. Thus, wastes recycle can be realized.

However, how do we evaluate the actual effect of

crankshaft remanufacturing technology?

Firstly, the most remarkable effect of crankshaft

remanufacturing technology is the recycle of parts.

Generally, recycle and utilization are different ideas.

The reprocessing idea of crankshaft remanufacturing

technology realizes the reuse of abandoned parts.

These parts can be utilized twice after reprocessed

and polished by advanced reprocessing technology.

Thus, cost is controlled and resource waste is

reduced.

Secondly, the application effect of crankshaft

remanufacturing technology can maximize its

support for green manufacturing. With the spread of

environmental protection idea, people pay more

attention to the development of green manufacturing.

The core idea of green manufacturing is energy

conservation and waste avoiding. If the key

technology of crankshaft remanufacturing works,

green manufacturing will be greatly promoted. This

technology can recycle and reuse wastes on their

original position, which greatly realizes the

comprehensive development of green manufacturing.

5 CONCLUSIONS

In this work, remanufacturing application ideas and

effects are analyzed. Besides, remanufacturing

technology on the background of energy

conservation and environmental protection can solve

the problem of resource recycle. The characteristic

and application skills are emphasized in the analysis

of remanufacturing technology. Thus, the key

technology can be used to realize the recycle of

abandoned crankshafts. As one of the most common

parts in engine, crankshaft has a high probability of

loss because of its high frequency of using. In the

process of remanufacturing, the expected effect

should be confirmed, and the final evaluation should

be made according to the actual effect. In conclusion,

the application of remanufacturing key technology

plays an important role in crankshaft

remanufacturing. Besides, it lays a certain foundation

for the development of green industry.

ACKNOWLEDGEMENTS

This work was supported by science and engineering

key project of Research and Application of

Crankshaft Remanufacturing Key Technology from

Education Department in Sichuan. Project number:

14ZA0337

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