Automotive

In the automotive manufacturing sector, automatic checkweighers play a crucial role in quality control, production efficiency, and logistics. These systems are widely used in the following scenarios:

1.Component Assembly Verification

2.Packaging Quality Assurance

3.Logistics & Sorting Optimization

Coal, Mine & Wood

In industries like coal minging, mineral extraction, and wood processing, raw materials often contain metal contaminants such as drill bit fragments, bolts, or tools. If undetected, these metal impurities can:

Damage critical equipment (crushers, grinders, or conveyor belts)

Cause sparks, risking dust explosions or methane ignition (especially in coal mines)

Household & Personal Care

In the household and personal care industry, product safety is paramount. This sector includes direct-contact items like ficail tissues, skincare products, and baby care goods (e.g., wipes and shampoos), which demand stringent hygiene and safety standards.

Metal detector plays an important role in this field.

Sources of Meteal Contaminants:

Raw material impurities: Staples in pulp or metal particles in cosmetics powders.

Equipment wear: Degraded mixer blades or filling machine components.

Packaging artifacts: Residual fragments from metal zippers or foil seals.

Packaging

In the packaging industry, woven bags and other flexible materials require stringent metal contaminant control - their end-use applications are unpredictable, ranging from food and pharmaceutical to industrial chemicals.

Primary Sources of Metal Contamination:

1.Raw material impurities: Polypropylene pellets or recycled plastics may contain metal shavings, screws, or wire fragments from processing equipment wear.

2.Production-line hazards: Degraded parts from extruders or looms (e.g., bearing debris, broken needles) contaminating woven fabric.

Pharmaceutical

The pharmaceutical industry demands exceptionally high product quality standards. For oral solid dosage forms like tablets and capsules, even trace metal contaminants (e.g., iron shavings, stainless steel particles, or equipment wear debris) can pose serious risks - potentially lacetating the difestive tract or disrupting drug release mechanisms, compromising efficiency and patient safety. Metal impurities primarily originate from two sources:

Raw materials: Active pharmaceutical ingredients or excipients (e.g., starch, lactose) may carry metallic residues.

Production equipment: High-precision machinery (e.g., tablet presses, capsule fillers, polishers, sieving machines) can generate metal fragments due to friction or aging. Without intervention, these contaminants accelerate equipment wear, raise maintenance costs, or even halt production lines, resulting in significant financial losses.

Plastic, Rubber & Recycle

In the plastic industry, metal detectors (also known as “metal detection systems” or “metal separators”) are critical quality control devices used to identify and remove metal contaminants from raw materials or finished products, ensuring production safety and product quality. Their necessity is highlighted in the following aspects:

1.Protection of Production Equipment

Plastic pellets are typically made from recycled plastics (e.g., PET, HDPE, PP) or virgin materials, which may contain metal impurities such as screws, iron filings, or aluminum fragments. If these metals enter production equipment (e.g., crushers, extruders, injection molding machines, blow molding machines, or molds), they can casue severe damage, including:

Renewable Energy

New energy souces (e.g., solar, wind, hydrogen) and renewable energy (e.g., hydropower, biomass) are progressively replacing fossil fuels, becoming the cornerstone of the global energy transition. Among them, polysilicon serves as the foundational raw materials in the solar photovoltaic industry, directly impacting the efficiency and cost of PV modules. Its importance is comparable to that of oil in traditional energy systems.

Aquatic Products

Metal contamination risks permeate throughout the aquatic products supply chain.

During harvesting, broken fishhooks, metal components from nets, or submerged wire fragments may become embedded in raw materials.

Transportation processes carry potential hazards from container parts or loading tool debris.

The most critical phase is processing - high-intensity operations of filleting machines, shellers, and other equipment generate wear particles, while aging stainless steel screens may shed microscopic metal fragments.

Baking

Metal Detectors: Safeguarding Food Safety

In baking production (e.g., biscuits, cookies, cakes, bread), metal contaminants may originate from:

Raw materials (e.g., metal fragments in flour)

Equipment wear (e.g., conveyor belt debris)

Process tools (e.g., borken needles in biscuit punching machines or loose wiring)

If undetected, these hazards pose consumer health risks and may trigger costly recalls.

Beverage

In the beverage industry, metal contaminants primarily originate from two sources:

Raw metarials (e.g., screws or wire fragments during harvesting).

Equipment wear (e.g., degraded bearings or pipe debrsi from aging machinery).

Fruits & Vegetables

In the fruit and vegetable industry, metal contamination poses a critical food safety risk across the entire supply chain. Potential hazards may arise at multiple stages:

During cultivation, loose or broken parts from agricultural machinery (e.g., plows, harvesters) can introduce foreign objects like wire fragments, nails, or metal debris into corps.

In harvesting and transportation, wear and tear from tools (e.g., crates, forklifts) may generate metal shavings.

At processing facilities, equipment such as cutters, pitters, and slicers gradually degrade over time, with blade erosion or mechanical failures potentially releasing tiny metal particles into products. This risk escalates in deeply processed goods (e.g., juices, purees, ready-to-eat meals), where metal contaminants can spread widely during grinding or mixing.

Grains, Oils & Condiments

In the grains, oils & condiments industry, metal contaminants pose risks throughout production:

Grain Processing (e.g., wheat, rice):Harvesting may introduce field debris (e.g., broken wires, machinery parts, or nails).

Conveyor belt fasteners or damaged sieves during transport/storage can shed stainless steel fragments.

Oil/Condiment Production:

High-speed equipment (e.g., crushers, oil press bearings) generates metal particles due to wear.

Fractured vibrating screens or pipeline fragments may contaminate final products (e.g., flour, chili powder).

Meat & Poultry

In meat and poultry production, metal contamination poses a critical quality risk across multiple stages:

1.Farming Phase: Feed may contain metal fragments (e.g., iron debris from harvesting machinery).

2.Slaughter & Processing: Metal shavings from baldes or grinders can embed into products.

3.Human Error: Tools like broken needles or nails may accidentally remain.

Such contaminants comproise product safety (e.g., causing internal injuries if ingested) and damage brand reputation.

Snacks & Convenience Foods

In the snack manufacturing industry, metal contamination represents a critical hazard requiring stringent control throughout the supply chain. Risks emerge at multiple stages:

Raw Material Risks:

Agricultural ingredients (e.g., flour, grains) may contain metal debris from worn farming equipment (e.g., wire fragments, screws) during cultivation or primary processing. Nuts and spices are equally vulnerable to metal residues during shelling or grinding.

Production Line Hazards:

High-intensity processing accelerates equipment degradation - broken mixer bearings, chipped cutting blades, or detached conveyor fasteners can introduct metal shards into products. This risk escalates in high-speed lines (e.g., extruded snacks, confectionery), where mechanical stressed is extreme.