Mobile crusher equipment quality appraisal

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mobile crusher takes the core principle of high-efficiency crushing and mobility as its core principle. By optimizing the crushing ratio, processing capacity and automatic control, it can achieve on-site crushing, classification screening and rapid transition of rocks, construction waste and other materials. It is widely used in mining, construction demolition, road engineering and aggregate production and other fields. In open-pit mines, it is used for coarse crushing of hard rock; in urban construction waste treatment, it meets the crushing and sorting needs of reinforced concrete; in aggregate production, it ensures the continuous output of multi-level finished materials. Compared with fixed crushers, mobile crushers have the characteristics of modular integration, strong environmental adaptability and low carbon emissions. They are the core equipment of modern green mines and circular economy.

Zhongke Testing is a product quality appraisal service organization registered with the court. It can provide mobile crusher equipment quality appraisal services. It has a professional appraisal team and advanced instruments and equipment to provide fair and accurate appraisal results for mobile crusher equipment quality appraisal.

As the environmental protection requirements of projects increase, related quality dispute cases have increased significantly. The judicial dispute focuses on:

1, performance index dispute: insufficient actual processing capacity, discharged particle size exceeds standard;

2, material defects: poor wear resistance of jaw plate/hammer head, frame welding cracks;

3, process issues: hydraulic system leakage rate, vibrating screen bearing temperature rise;

4, contract performance dispute: core configurations (such as imported hydraulic pumps, intelligent lubrication systems) are inconsistent with the technical agreement.

0 Such cases need to pass crushing efficiency testing, material failure analysis and dynamic working conditions verification to clarify the quality responsibility.

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1. Appearance inspection: Conduct a full-surface appearance inspection of the mobile crusher equipment to observe whether there are deformations, cracks, rust and other defects.

2. Performance test: Test the crushing capacity, production efficiency, energy consumption and other performance indicators of the equipment under simulated actual working conditions, and compare them with contract agreements or industry standards.

3. Disassembly inspection: disassemble part or all of the equipment, check the wear and damage of key components, and determine the actual service life of the equipment.

4. Material composition analysis: Conduct composition analysis on the materials of key components of the equipment to determine whether the materials meet the design requirements and whether there are quality defects.

5. Test comparison: Test and compare the identification equipment with equipment of the same type or batch, and analyze the reasons for the differences.

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A sand and gravel factory of the applicant signed a "Purchase Contract for Mobile Impact Crusher" with an equipment manufacturer of the respondent, agreeing that the processing capacity is ≥350t/h. After being put into operation, the production capacity was only 200t/h. The manufacturer argued that it was caused by the high mud content of the raw materials.

identification analysis results:

The quality analysis expert group discussed and comprehensively analyzed the relevant information of "mobile crusher equipment", contract technical agreements, on-site investigation case materials and other data, and made the following quality analysis opinions :

The actual rotor speed of the mobile crusher equipment involved in the case is only 650rpm (agreed 800±16rpm), the thickness of the wear-resistant layer of the impact plate is only 15mm (agreed ≥25mm); the clogging rate of the vibrating screen holes exceeds 30% (agreed ≤10%), and internal leakage in the hydraulic system causes a pressure loss of 20%.

The appraisal conclusion determined that defects in the equipment's power system and wear-resistant parts were the main reasons for insufficient production capacity.

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mobile crusher equipment quality appraisal report should include:

1, appraisal purpose and reference standards;

2, involved specifications, production batch number, construction record;

3, testing method Methods and equipment list;

4, correlation analysis of test data and failure;

05, clear quality responsibility determination conclusion and technical basis;

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26, signature of appraiser, professional qualification certificate and official seal of the organization.

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