Jaw Crusher Wear Parts

Qiming Machinery had manufactured jaw crusher wear parts over 30 years with the best quality and suitable price. Our jaw crusher wear liners provide the highest possible wear life combined with mechanical reliability and numerous mounting possibilities. On the other hand, Qiming Machinery’s wear parts are easy and economical to install and are available in our designs.

Available for aggregates, cement, and mining industries, parts designed to improve efficiency and reduce costs by extending wear life and minimizing downtime. Wear parts include:

  • Jaw Plates
  • Liner Plates
  • Toggle Plates

Qiming Machinery proprietary alloys and innovative designs result in long wear life compared to other OEM replacements.

Benefits

Why Choose Qiming Machinery Jaw Crusher Parts?

  • Over 20 years casting experience
  • Custom fit for greater performance and easier replacement
  • More cheap price with better quality
  •  Design improvements increase crusher efficiency and prevent premature erosion
  • Large inventory of crusher wear parts in stock for immediate deliveries
  • Professional sales and after-sales to service for you

Wear Parts For Brands Jaw Crushers

Downtime is costly, this is the reason why we work hard to make sure you receive your replacement jaws quickly. We never compromise on quality, because it’s important to us that our customers are able to get back to work in the shortest time possible. Qiming Machinery had stocked large number of brands crusher wear parts, and also we have thousand of brands jaw crusher replacement parts wood models.

Question 1: Which material does your company supply for jaw crusher wear parts?

Answer: Qiming Machinery supply kinds of materials to cast jaw crusher liners. They are manganese steel (Mn14, Mn18, Mn22), manganese alloy steel(Mn14Cr2, Mn18Cr2, Mn22Cr2), alloy steel, TIC insert manganese steel or other your design material.

 

Question 2: Which material of pattern your company make for jaw liner, and what is the cost?

Answer: Normal the patterns are manufactured by hardwood. For a large number of inquiry jaw liners, we also select FRP pattern. For the hardwood pattern, it costs around USD0.6/kg.

 

Question 3: If I do not have those jaw crusher wear parts drawings, do you can help us?

Answer: Our foundry had stocked thousand of patterns, so if you can not supply drawings, you can send us the part number to check. On the other hand, we also can send our engineer to your workplace to help you measure those drawings.

 

Question 4: Do your company can supply jaw crusher spare parts, such as flywheel?

Answer: We are a casting foundry, so right now just can supply jaw crusher wear parts. However, our foundry also has some cooperations with the spare parts suppliers, so we also supply the spare parts service.

13 Tons of Jaw Plate Production Processing

In the 2008 year, Qiming Machinery got an order from a USA customer, who need to produce a big jaw crusher liner. Weight around 13 tons, sizes:4200mm*2300mm*400mm, the tooth face is working face, the back face is installation face, need machining, the material had chosen Mn18 alloy steel.

13T Jaw Plate Sample Drawing

13T Jaw Plate Sample Drawing

 

 

Material Selection

The basic material composition in the following tab:

ElementCMnSiPSMoNi
Content %1.1-1.3517.5-19.0≤0.8≤0.06≤0.01

In order to get good Wear resistance, we need to add some “Ni” and “Mo” elements.

 

Production Processing

  1. We choose wood to manufacture the big jaw plate pattern.
  2. The molding sand is sodium silicate chrome ore sand, and the second layer sand is sodium silicate limestone sand, which is conducive to shrinkage after pouring.
  3. High alumina refractory brick pipe is used in gating system to ensure that molten steel does not contact with molding sand in the runner, so as to reduce sand washing, sand hole, air hole, and other defects; 12 evenly distributed tooth plate sides are used for the inner runner; 4 heating risers are arranged on the side of the toothed plate opposite to the inner runner; sand mold is padded 20cm high on the riser side to facilitate exhaust and improve the feeding effect of fire nozzle; alcohol-based zircon powder is used as coating Paint, brush 2 layers, ignite and burn in time after each painting; check and confirm carefully before closing the box, and fasten evenly with fastening bolts after closing the box.

 

Melting and pouring

  1.  High-quality cold-rolled sheet metal without oil and rust is selected for scrap. All alloys are tested first. Only high-quality raw materials with definite composition can be put into the furnace.
  2. The surface of the smelting process is covered with limestone slag to reduce the oxidation and air absorption of molten iron. The molten steel sample before the furnace can be discharged after passing the spectrum analysis and temperature measurement.
  3. During tapping, the rare earth silicon was modified by the in ladle flushing method to refine the grain size.
  4. Argon is blown into the ladle to remove impurities and gases. When argon is blown into the ladle, the temperature should be measured to ensure that the pouring temperature meets the process requirements.
  5. The pouring temperature is controlled at 1410-1425 ℃ and large flow casting is adopted.
  6. After pouring, cover the riser with an exothermic agent to ensure effective feeding.

 

Insulation And Cleaning

1. After pouring, the sand at the root of the riser should be shaken off in time to avoid the shrinkage and crack of casting;

2. After unpacking, the riser should be covered with dry sand and cooled slowly;

3. When cutting the riser, cut it off quickly and then cover the cut with dry sand and cool it to room temperature

 

Heat Treatment

The heat treatment adopts water cooling quenching. The heat treatment process is shown in the figure below:

13T Jaw Plate Heat Treatment

13T Jaw Plate Heat Treatment

 

Results

After 35 days of manufacture time, the customer’s 13 tons jaw plates had finished and sent to USA customer. Around 6 months later, we got this customer feedback that this jaw plate works very well and spans life more than original wear parts.

Improvement of fixed jaw plate structure of jaw crusher

One of our China customers who has a PE600*900 jaw crusher to crush Lead-zinc Mine. After a long time running, the fixed jaw plate wear out very quickly. So he asked our engineers to help him to solve this problem.

Reasons for the transformation

According to the operation of pe600 × 900 jaw crusher, through long-term observation, it is found that the main reason for the difficulty in controlling the size of ore discharge opening is the wear of tooth profile of tooth plate. More important is the wear of the fixed plate. However, the main wear parts of the fixed plate are concentrated at 3 / 4 below the centerline of the fixed plate. The wear of the upper part is not large, which is only normal friction wear. Even if there is a certain wear, it will not affect the normal operation of the crusher. That is to say, only 3 / 4 below the centerline of a fixed plate has the maximum force and wear. Only one part of the wear, it is necessary to replace the entire fixed plate, not only time-consuming but also a serious waste of materials. The high cost of crushing directly affects the economic benefits of the concentrator. In view of this situation, under the condition of ensuring the overall structure of the toothed plate, ensuring the crushing cavity shape of the crusher, and keeping the technical parameters unchanged, the fixed toothed plate is divided into fixed plate and working plate. It is an integral tooth plate. In this way, the normal operation of the crusher can be achieved only by changing the working plate. This saves time and material.

 

Transformation scheme

In the transformation, the working part of the crusher is fixed tooth plate and moving tooth plate. The moving tooth plate is fixed on the moving jaw, and its main wear parts are concentrated in the middle. In the transformation, there is no transformation of the moving tooth plate, but the fixed tooth plate is mainly reformed. After the modification, the overall weight of the fixed toothed plate is increased by 200kg. Since the fixed toothed plate is connected with the frame, the increase of the fixed toothed plate weight has no adverse effect on the whole crusher.

Based on the working characteristics of the crusher, the fixed toothed plate is divided into upper and lower parts about 3 / 4 below the centerline. The working plate and the fixed plate are connected by flat head M30 screw. In order to ensure its strength, the fixed plate is thickened at about 1 / 3 of the centerline. The material is unchanged, and the tooth shape is still zgmn13cr2, as shown in Fig:

Fixed jaw plate after change

Fixed jaw plate after the change

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