In WordPress by default the blog name appears in the title of all the posts and and pages. But this is not well taken in SEO. Because in SEO the more exact match is the search term with the title of the article of post the more chances of it coming on the top.
Suppose I write an article on HOW TO WRITE BLOGS
the title automatically will become HOW TO WRITE BLOGS >> MYWEBEXPERIENCE.com
This additional name of blog in title is not good for search engines and infact of no use.
Removing this is very simple. Just add an plugin called ALL IN ONE SEO PACK and in the customization make changes to post titles.
tags: Remove Blog Name from title for SEO | Does having site name in title effect seo