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Product Introduction
>Product Introduction
Impact crusher is a mechanical device that uses the high-speed impact of plate hammers and the rebound effect of a counterattack plate to repeatedly impact and crush mineral. The plate hammer is fixed on the high-speed rotating rotor and several impact plates are arranged at different angles along the crushing chamber.
The mineral enter to action area of the plate hammer, is the first shattered by the first impact of the plate hammer, while also gaining kinetic energy and rushing towards the counterattack plate at high speed. After colliding with the counterattack plate and breaking again, the mineral is bounced back to the action area of the plate hammer and re-impacted by the plate hammer. Repeat this process until it is crushed into the required particle size and discharged from the machine.
Impact crusher usually be used for first , second and finally crushing mineral of lower & medium hardness, such as limestone, coal, calcium carbide, quartz, dolomite, sulfide iron ore, gypsum, and chemical raw materials.
1. Plate Hammer
The shape of the plate hammer is closely related to the fastening method and working load. The design of the plate hammer should match the requirements of reliable operation, easy loading and unloading, and reduce usage cost of the plate hammer. The plate hammer is generally made of high chromium alloy steel, high manganese alloy steel, and other wear-resistant alloy steels. There are many shapes of hammers, including long strips, T-shaped, S-shaped, I-shaped, axe shaped, and slotted, generally in the form of long strips.
2.Impact plate / counterattack boards
The function of the counterattack plate ( Impact plate ) is to withstand the impact of the mineral hit by the plate hammer, causing the mineral to be crushed by the impact, and bouncing the crushed mineral back to the impact zone for further impact crushing to get the desired product particle size.
There are many shapes of counterattack boards (impact plate), mainly including two types: line shaped and curved. The polygonal impact plate surface can make the mineral on each point of the counterattack plate impact in an approximately vertical direction, thus achieving the best crushing effect. The arc-shaped counterattack surface can cause the material block to bounce out of the counterattack plate, forming a fierce impact crushing zone in the center area to increase the free impact crushing effect of the minerals.
3. Crusher liner
This spare wear part of Jaw cruser be used to protect the machine will not broken by mineral impact during operation, should have longer life with high hardness, lower wear-rate & breakage rate.
>Product Advantage
Relatively stable quality
NGZR have more than 10 years experience of R&D / Manufacutring / After-sales srevice for High Mn & High Cr casting wear parts (such as high Chrome casting gridning media and high Mn-Cr alloy cast mill liner & crusher liner & Jaw plate etc.) in Mining and Cement Indusries.
Lower usage cost
Mn-Cr alloy steel cast waer part (plate hammer & impact plate & crusher Liner) have long usage life with stable quality.
Because NGZR have large production capacity with Advanced Lost foam process full Automatic precision casting line and Resin-sand Wooden mould manual casting production line, we can provide more competive price products to all customers to help customer get lower production unit cost than before.
Customized alloy Steel composition
NGZR foundry was able to match customer needs to readjust the Chemical Composition of alloy steel content (Mn /Cr) , or increased other special metallic element (Si /Mo /Cu /Ni etc), through special heat-treatment processing, can help this cast crusher liner & Impact plate & Plate hammer achieve to special Mechanical performance, to follow different customer’s different working conditions.
Customized drawing size and shape
NGZR foundry can follow customer’s drawing of exist jaw crusher wear part to customized . Also we can revised the exist wear parts shape / thickness and wearing quality to help customer get lower wear-parts cost and higher production efficiency.
Door to door measure & Installation Guide
If customer can’t provide drawing of existing impact crusher, NGZR will arrange our service engineer come to measuring and design of the one-stop service with free of charge.
If customer required, NGZR provide door to door installation guide serivce with pay charge.
Technical Parameters
>Technical Parameters
| #1 Alloy Chemical Composition: | |||||||||
ITEM | C | Si | Mn | P | S | Cr | Mo | Ni | Cu |
Mn13Cr2 | 1.05-1.35 | 0.3-0.9 | 11-14 | ≤0.06 | ≤0.04 | 1.5-2.5 | -- | -- | -- |
Mn13Cr2Mo | 1.05-1.35 | 0.3-0.9 | 11-14 | ≤0.06 | ≤0.04 | 0.4-1.2 | 0.4-1.2 | -- | -- |
Mn18Cr2 | 1.05-1.35 | 0.3-0.9 | 16-19 | ≤0.06 | ≤0.04 | 1.5-2.5 | -- | -- | -- |
Mn22Cr2 | 1.05-1.35 | 0.3-0.9 | 20-22 | ≤0.06 | ≤0.04 | 1.5-2.5 | -- | -- | -- |
Cr26Ni5 | ≤0.20 | ≤0.20 | ≤0.20 | ≤0.06 | ≤0.04 | 24-28 | ≤0.50 | 4-6 | -- |
Cr26Ni12 | 0.2-0.5 | ≤0.20 | ≤0.20 | ≤0.06 | ≤0.04 | 24-28 | ≤0.50 | 11-14 | -- |
Cr25Ni20Mo | 0.35-0.45 | ≤0.20 | ≤0.20 | ≤0.06 | ≤0.04 | 23-27 | 1.1-1.4 | 19-22 | -- |
Cr15Mo2 | 2-2.8 | ≤0.10 | 0.5-1.0 | ≤0.10 | ≤0.06 | 13-18 | 1.5-2.5 | 0-1.0 | 0-1.2 |
Cr20Mo2Cu | 2-3.0 | ≤0.10 | 0.5-1.0 | ≤0.10 | ≤0.06 | 18-22 | 1.5-2.5 | 0-1.0 | 0.8-1.2 |
Cr26Mn | 2-3.0 | ≤0.10 | 0.5-1.0 | ≤0.10 | ≤0.06 | 23-28 | 0-1.5 | 0-2.0 | 0.8-1.2 |
Remark: we can make any other type of alloy materials for customized. | |||||||||
| #2 Product Physical Technical: | |||||
ITEM | Yield strength Yp0.2 / MPa | Tensile Strength Rm / MPa | Impact absorption KU2 /J | Hardness HBW | Micro -structure |
Mn13Cr2 | ≥ 390 | ≥ 735 | ≥ 96 | ≤ 300 | A + C |
Mn13Cr2Mo | ≥ 390 | ≥ 735 | ≥ 96 | ≤ 300 | A + C |
Mn13Cr2Ni3 | ≥ 370 | ≥ 705 | ≥ 118 | ≤ 300 | A + C |
Mn18Cr2 | ≥ 390 | ≥ 735 | ≥ 96 | ≤ 300 | A + C |
Cr26Ni5 | ɑ ɓ(MPa) 590 | A + F | |||
Cr26Ni12 | ɑ ɓ(MPa) 490 | A + F | |||
Cr25Ni20Mo | ɑ ɓ(MPa) 490 | A + F | |||
Cr15Mo2 | HRC ≥ 53 | M+ A + C | |||
Cr20Mo2Cu | HRC ≥ 58 | M+ A + C | |||
Cr26Mn | HRC ≥ 55 | M+ A + C | |||
M= Martensite ; C= Carbide ; A= Austenitic ; F= Ferritic ; | |||||
Remark: we can make any other special mechanical properties for customized | |||||
Product Uses
>Product Application
Used for Mining , cement, chemical, coal -fried power, metallurgy, Sandstone aggregate etc.
>Product design & uses
How to choose correct alloy material and shape to reduce production cost?
1.Fit the existing Impact crusher to choose alloy material
High Mn-Cr alloy steel have good impact toughness, should not be broken, can be used to crusher Liner and impact plate;
High Chromium alloy steel have good hardness & wear-rate than Mn-Cr alloy, but easy to broken, can be used to make palte hammer.
2.Fit the RCM to choose the alloy steel
The RCM ( reliability-centered maintenance) time of crusherl become loner, the crusher liner & plate hame & impact plate should be have higher hardness. However, the product hardness increased, that will be used more expensive alloy raw material such as Mo / Ni / Cu / Cr / Mn etc, that will be increased the product price and unit usage cost.
3.Design the better shape of crusher liner & Jaw plates
The better shape of Impact plates & plate hammer will help crusher have more effective crushing, increased the production capaciy and quality!
NGZR can help customer to Research & Develop the Jaw platea & liner shape for existing hammer crusher machiery.
Video
>Product Processing Video
FAQ
>FAQ
How to get a Quotation ?
Please send your Impact crusher machinery informations sucha as Machinery brand /specifications / wear- parts drawing etc. and purchase quantity to us, we will send our quotation sheet to you by E-mail within 3 working days .
How to place an order if we have not wear-part drawing size ?
Please contact with us, We will arrange a Service Engineer to your mill workshop to measure on site, then we will draw the dimensions drawing and send to you approved. After you approved the drawing, we can confrim the order and arrange to produce.
What is your MOQ ?
For the Impact crusher, MOQ is one sets of whole Impact crusher wear-parts.
What is your order Lead-time ?
The order lead-time is 30-45 days after get deposit;
What is your payment term ?
1. 30% T/T in advance, balance T/T before shipment ;
2. O/A 30- 180 days;
What is your price term ?
We can do price term as below:
#1 EXW factory, including VAT tax;
#2 FOB Shanghai / Ningbo Port;
#3 CIF Port of delivery;
#4 DAP place of delivery;
Do you provide the Installation Service?
Yes, we provide the Installation Service，we can arrange a Service Engineer team to your crusher workshop to install, but this service need you pay all charge of this instal service..
And also we provide the Installation Guide by video / phone with free (didn’t arrive to your workshop).
Do you provide the guarantee of useful life time?
We can guarantee the time of hammer crusher useful life, this will mark on contract.
