ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel
  • »
  • Technology»
  • Materials & Industrial Technology

Difference between Lapping and Honing process

Updated on January 2, 2018

Differentiation

What is the difference between the two cutting tool operations: Lapping and Honing?

Although the two processes are similar, each has a unique execution and result. They are employed to attain and improve some functional properties in machine components. These applications increase the smoothness of the exterior surface of the components and refine the geometry.


Lapping

Lapping is the method employed to get the smooth outer surface on metal jobs. After going through this application your part will be ready with a super-flat surface with desired close tolerances. This is regarded as one of the oldest methods to get an extreme dimensional accuracy.

In lapping, abrasives are used to do the work. Unlike grinding, where bonded abrasives are used, it uses loosely bonded abrasives. Generally, you can use this method to remove 0.0005in to 0.00002in of metal.

Lapping machine

Lapping operation with plates.
Lapping operation with plates.

Operation

Lapping machines

So, let's go to the shop-floor and start lapping operation now. What do we need for this?

The manufacturing method involves passing the metal job between one or more lap plates with a fluid consisting of abrasives. The process is mainly performed with the help of conditional rings and lapping plates. The lapping plate is made out of high-quality soft cast iron. The conditional rings are used to grip the metal component properly and rotate it in the region of lap plate.

The path of abrasive grains is prevented from repeating on the component by continuously changing the relative motion between plates and conditional rings.

The process can be performed with hand by rubbing flat-lap over the work-piece surface.

Abrasives used

The common names of abrasives used in this method are as follows,

  • Al2O3 and SiC
  • Cr2O3
  • B4C3
  • Diamond

The grain size of abrasives depend upon the work-piece material and desired results.

Master lap for hand lapping

Lap plate(master lap) for hand lapping.
Lap plate(master lap) for hand lapping.

Honing

Honing is an abrasive machining process. Along with geometry control, honing is also used for getting the surface texture. In this method of super-finishing multi-edge tools are used which are coated with abrasives. This tool is often called as 'Hone'.

Again, like lapping, we can control the final results by controlling the type and size of abrasives used in the process.

Honing machine

Operation

Hone or honing stone is similar to grinding wheel. Using special adhesives the abrasives are bonded together on the hone surface. The main advantage of this process is there is no need to rotate work-piece. There are no face-plates or rings.

Most honing is performed on the inner walls of the metal body like the bore of cylinders used in automobiles.

Honing process

Honing process using machine.
Honing process using machine.

Wrap up

The summary is given below in a table format.

Difference between Lapping and Honing

Lapping
Honing
In this method work-piece is rotated.
In this method work-piece is not rotated.
It is not a stock removal process.
It is stock removal process.
Face-plate is used as tool.
Multi-edge tool called hone is used.
Abrasive particles are loose bounded.
Abrasive particles are bounded to honing stone as in grinding wheel.

Comments

    0 of 8192 characters used
    Post Comment

    No comments yet.

    working

    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: "https://hubpages.com/privacy-policy#gdpr"

    Show Details
    Necessary
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
    Features
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Marketing
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Statistics
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)