Quality appraisal of automatic stretch molding and tile pressing machine

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automatic die-forming tile press uses the core principle of high-pressure molding and intelligent control synergy. By optimizing the stability of the hydraulic system, mold positioning accuracy and production rhythm, it achieves the synergy of tile molding density, dimensional consistency and surface finish. It is widely used in the production of cement tiles, glazed tiles and color steel tiles and other building materials. In the traditional tile industry, it is used for efficient pressing of clay tiles; in the field of new building materials, it meets the lamination and composite needs of fiber cement tiles; in roofing engineering, it ensures the complex texture formation of antique tiles. Compared with manual equipment, automatic die-forming and tile-pressing machines have the characteristics of high molding pressure, long mold life and low energy consumption. They are the core equipment for the industrial production of building materials.

Zhongke Testing is a product quality appraisal service organization registered with the court. It can provide quality appraisal services for automatic die-forming and tile-pressing machines. It has a professional appraisal team and advanced instruments and equipment to provide fair and accurate appraisal results for the quality appraisal of automatic die-forming and tile-pressing machines.

With the advancement of standardization in the building materials industry, related quality dispute cases have increased significantly. The judicial dispute focuses on:

1, performance index dispute: insufficient molding pressure, excessive tile damage rate;

2, material defects: insufficient hardness of mold steel, poor wear resistance of hydraulic cylinder seal ring;

3, process problems: coaxiality deviation of the mold frame guide column, pressure oscillation caused by PID parameter imbalance of the control system;

4, contract performance dispute: core components (such as servo motor brand, PLC programming software version) are inconsistent with the technical agreement.

0 Such cases require clear quality responsibility through pressure testing, material failure analysis and dynamic accuracy verification.

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Automatic die-forming and tile-pressing machine litigation quality appraisal usually uses the following technical methods:

1. On-site inspection: Conduct on-site inspection of the transportation equipment, take photos and videos, and extract relevant physical evidence.

2. Performance test: Test the performance of transportation equipment according to relevant standards, such as power, braking, stability, etc.

3. Disassembly and analysis: dismantle the transportation equipment and check whether its internal structure and parts are defective or damaged.

4. Material analysis: Test the materials of transportation equipment, such as hardness, toughness, corrosion resistance, etc.

05. Computer simulation: Use computer technology to build a model of transportation equipment, simulate its operating conditions, and analyze whether there are design or manufacturing defects.

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A building materials factory of the applicant signed a "Fully Automatic Cement Tile Machine Purchase Contract" with an equipment manufacturer of the respondent, stipulating that the mold life should be ≥ 600,000 times. The mold cavity collapsed within less than 300,000 times after being put into production. The manufacturer argued that it was caused by the raw materials containing hard impurities.

Appraisal analysis results:

Quality analysis expert group’s relevant information, contract technical agreement, and on-site inspection case materials on the "automatic die-forming and tile pressing machine" Materials and other data were discussed and comprehensively technical analyzed, and the following quality analysis opinions were made:

The actual Cr content of the mold steel of the automatic die-forming and tile-pressing machine involved was 4.2% (agreement ≥ 4.75%), and the heat treatment hardness was HRC 48 (agreement ≥ 55); the coaxiality deviation of the guide column is 0.8mm (agreement ≤ 0.3mm), resulting in uneven load wear; the hydraulic system pressure oscillates ±1.2MPa (agreement ≤ ±0.5MPa).

The appraisal conclusion determined that defects in material composition and structural accuracy are the main reasons for insufficient life.

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Automatic die-forming and tile-pressing machine quality appraisal report should include:

1, appraisal purpose (such as mold failure attribution, performance verification) and reference standards;

2, involved equipment model, mold batch, production record;

3, testing method and equipment clearance

26. Signature of the appraiser, mechanical engineer qualification certificate and official seal of the organization.

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