Standard Crusher Blow Bars To Suit Every Application

Blow bars are the main impact crusher wear parts. Normally, 4 pieces a set, some plants have 3 pieces a set. According to the crusher type, Qiming Machinery develops different designs and manufactures various solutions of blow bars.

Qiming Machinery is one of the largest crusher wear parts casting foundry in China. We understand these requirements, and after more than 20 years of reducing downtime, we have the experience as well.

Depending on what you’re planning to crush – asphalt, limestone, or even if you’re recycling concrete – the type of blow bar you use matters.

As a rich experience crusher blow bars casting foundry, our engineers can manufacture different materials to suit your different working conditions and special requirement.

 

Benefits

  • A large number of blow bars patterns, which will help you decrease your cost.
  • Over 30 years of casting experience to keep your parts in good quality.
  • Various material selection. Our foundry supplies different kinds of material to cast blow bars, which will give you more choices.
  • Strictly quality control system. Our foundry had passed ISO9001:2008 system control system and had supplied OEM service for famous brands.

Products

Manganese Steel Blow Bar

Manganese Steel Blow Bar

Chromium Steel Blow Bar

Chromium Steel Blow Bar

Ceramic Matrix Composites Blow Bar

Ceramic Matrix Composites Blow Bar

TIC Insert Blow Bar

TIC Insert Blow Bar

The crusher blow bar is an important part of the impact crusher. When the material enters the action area of the crusher blow bar, it is crushed by the high-speed impact of the hammer and thrown to the impact plate installed above the rotor to crush again, and then from the impact liner Bounce up and return to the area of impact of the crusher blow bar to break again.

Qiming Machinery has had manufactured thousands of crusher blow bar patterns, which can help you decrease the pattern cost and shorten your delivery time.

Impact Crusher Blow Bars Wood Patterns

Impact Crusher Blow Bars Wood Patterns

Qiming Machinery’s blow bar patterns suit for those types of impact crushers:

  • NP Series
  • LT Series
  • MR Series
  • RM Series
  • APK Series
  • APS Series
  • Others

If you have other types of impact crushers, we also can supply measure the drawings service.

Flow Chart

Flow Chart

Qiming Machinery chooses sand casting and V-method to cast jaw plates. Its flow charts as following steps:

  • Pattern making. After confirmed your orders, we will start to manufacture new wood or steel patterns. If we have the inquiry patterns, no need to manufacture a new pattern.
  • Pattern painting and flask molding.
  • Choose the right raw material. Our manganese steel raw material is 65Mn. Our engineer will calculate the raw material ratio based on customer material inquiry.
  • Bottom pour ladle casting. 
  • Cooling, Moulding box open, and sand conditioning.
  • Cleaning.
  • Heat treatment. We will record all the heat treatment temperature line to match the standard heat treatment.
  • Polishing, Machining, QA Checking.
  • Painting and Shipping.

Different working conditions need different material crusher blow bars to suit. Qiming Machinery supplies the following materials for impact crusher blow bars:

Manganese Steel Blow Bars

Manganese steel blow bars are commonly used primary crusher applications and provide high shock resistance and are available in both Mn14% and Mn18% material grades. They are well suited to applications where tramp iron is possible in the feed material. Manganese bars are often used as a ‘safe’ choice, however, other materials available can offer significant life costs benefits. The wear resistance of manganese steel with austenitic structure is attributable to the phenomenon of working hardening. The impact and pressure load results in a hardening of austenitic structure on the surface.

Martensitic Steel Blow Bars

Martensitic steel blow bar is one of the kinds of impact crusher blow bars. Martensitic Steel will be used whenever hardness and impact resistance are both needed, e.g. in primary and recycling applications. The martensite is a completely carbon-saturated type of iron by special heat treatment for improving the strength and wear properties, which lie between manganese steel and chrome steel. The steel hardness ranges from 53 to 58HRC and the impact strength is about 50J/cm2.

Chromium Steel Blow Bar

High chromium steel is widely used in casting impact crusher wear parts. The impact crusher wear parts include crusher blow bar and impact plate. As normal, Cr21 and Cr26 are used in casting crusher blow bars; the Cr15 material used in casting impact plate.

Ceramic Matrix Composites Blow Bar

Ceramic Matrix Composites Blow Bar is one of the normally impact crusher wear parts. Ceramic Matrix Composites Blow Bar include martensitic ceramic matrix composites blow bars and high chromium matrix composites blow bars.

Titanium Carbide Insert Blow Bars

Titanium carbide insert blow bars mean manganese steel or alloy steel as a matrix body, insert titanium carbide bars into the body. Under this design, the tic inserts blow bars span life more than other material. Titanium carbide insert blow bars is supplied by Qiming Machinery.

Different sizes of crusher blow bars need different heat treatment control. Qiming Machinery has a complete heat treatment control system to promise all wear parts to get good quality.

For detailed high chrome crusher blow bars heat treatment, you can check this page.