Mortar production equipment quality appraisal

mortar production equipment takes precise proportioning and efficient mixing synergy as its core principles. By optimizing mixing uniformity, metering accuracy and production capacity stability, it realizes the standardized production of dry-mixed mortar, special mortar and compressive strength. It is widely used in the fields of building masonry, ground leveling, thermal insulation and decoration engineering. In the production of ready-mixed mortar, it is used for three-dimensional forced mixing of sand/cementitious materials/additives; in the field of self-leveling mortar, it meets the process requirements of high fluidity and low shrinkage; in special mortar, it ensures the full combination of polymer modifiers and inorganic materials. Compared with traditional mixing equipment, mortar production equipment has the characteristics of modular design (integrated batching-mixing-packaging), high dust removal efficiency and intelligent control (formula database + remote operation and maintenance). It is the core equipment for the industrial production of new building materials.

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

With the upgrade of green building materials standards, related quality dispute cases have increased significantly. The judicial dispute focuses on:

1, performance index dispute: excessive mixing uniformity, false production capacity;

2, material defects: insufficient thickness of the wear-resistant layer of the mixing arm, linearity error of the measurement sensor;

3, process problems: pressure loss in the pneumatic conveying system, rupture of dust removal filter bags;

4, contract performance dispute: core modules (such as imported weighing modules, AI formula optimization systems) are inconsistent with the technical agreement.

Mortar production equipment quality appraisal technical methods mainly include:

1. Appearance inspection: Check whether there are obvious defects in the appearance of the equipment, such as deformation, cracks, paint peeling, etc.

2. Dimensional measurement: Measure the consistency of the actual dimensions of each component of the equipment with the design requirements to determine whether there are errors or non-compliance with standards.

3. Performance test: Conduct actual operation tests on the equipment to test its mixing efficiency, conveying capacity, measurement accuracy and other performance indicators, and compare them with the standards agreed in the contract.

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

A building materials factory of the applicant signed a "Dry Mix Mortar Production Line Procurement Contract" with an equipment manufacturer of the respondent, and it was agreed that the mixing CV ≤ 5%. After being put into production, the mortar separated into layers (CV value 12%). The manufacturer argued that it was caused by fluctuations in the moisture content of the raw materials.

identification analysis results:

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

The filling rate of the twin-shaft mixer of the mortar production equipment involved in the case was only 30% (agreement ≥ 50%), resulting in convective mixing failure; the zero point of the weighing scale drifted by ±2% (agreement ±0.5%), and the additive ratio was out of control; the air volume of the dust removal fan was attenuated by 40% (agreement ≤ 10%), exacerbating material stratification.

The appraisal conclusion determined that defects in the equipment process design and control system were the main cause of quality.

Mortar production equipment quality appraisal report should include:

1, purpose of appraisal (such as formula failure attribution, environmental compliance verification) and reference standards;

2, equipment model involved, control system version, production log;

3, testing method and equipment list (such as laser particle size analyzer, XRD);

4, correlation analysis between test data and failure (such as the impact of filling rate on mixing uniformity);