Daily use and maintenance of rock wool longitudinal cutting conveyor

Applicable equipment: Vertical cutting and conveying section of rock wool production line, equipped with vertical cutting saw and strip cutting, conveying fluffy rock wool and finished rock wool board; Core difficulty: A large amount of rock wool fibers and dust entering the conveyor belt, bearings, guide rails, and cutting transmission components Pre start inspection for each shift (mandatory for operators) Inspection of conveyor table and conveyor belt Clean the surface and side gaps of the belt to prevent the accumulation of rock wool debris and dust, and prevent hard objects from scratching the belt and causing it to deviate. Check the rubber conveyor belt/chain plate for cracks, bulges, and edge wear; The belt joint has no adhesive opening. Visually check that the tension of the conveyor belt is consistent on both sides, and there is no tendency for unilateral looseness or deviation. Transmission and Roller Check whether the surfaces of the driving roller, driven roller, and tension roller are covered with rock wool slag; The roller bearing has no abnormal noise; The fastening bolts of the bearing seat are not loose. Vertical cutting supporting mechanism (cutter/blade holder) Check the sharpness of the longitudinal cutting circular blade and ensure that there are no broken edges on the disc; The sliding guide rail of the knife holder is unobstructed by debris; The clearance between the cutterhead is stable. Power, protection, electrical The appearance of the reducer and motor is free of dust accumulation; The protective cover is intact and firm, and it is strictly prohibited to remove the protective operation. The emergency stop switch, deviation limit, and photoelectric sensing switch are sensitive in action; The wires are free from wear and are wrapped in rock wool fibers. No load test run Run without load for 2-3 minutes: observe the smoothness of the belt operation, whether there is any abnormal noise, and whether the belt is rubbing against the frame; Only after confirming normal operation can the material be loaded for production.

01 August-2026

Daily use and maintenance of rock wool edging machine

Characteristics of working conditions: A large amount of rock wool dust and fiberglass easily enter bearings, guide rails, chains, and electrical control boxes; Dust is the primary cause of equipment failure; Divided into daily, weekly, monthly, and quarterly maintenance, with accompanying operating prohibitions and common faults. Pre startup specifications (mandatory for each shift) Environmental cleaning Clean the frame, pressure wheel, and feeding guide groove, remove accumulated rock wool debris and dust, and prevent feeding jamming, scratching of color steel plates, and wear of molds. Mechanical inspection Check the upper and lower edge pressing wheels and forming molds: no deformation, breakage, or adhesive residue; The wheel surface is parallel without deviation; Check all bearing seat fixing bolts and frame foundation screws for looseness; The tension of the chain/synchronous belt is moderate, without cracking or tooth detachment; Manual turning, smooth rotation, no jamming, and no metal friction noise. Power and Hydraulic/Pneumatic (two mainstream models) ✅ Hydraulic version: Check the oil level of the hydraulic station within the scale range; The oil pipe has no oil leakage; The pressure gauge returns to zero normally. ✅ Pneumatic cylinder model: stable air source pressure (conventional 0.5-0.7MPa); The oil-water separator drains water and there is no air leakage in the air pipe. Electrical safety Check the sensitivity of the emergency stop button and limit switch; The outer layer of the circuit is not worn; The dust-proof seal of the electrical control box is intact, and dust is strictly prohibited from entering the box. No load trial operation Run without load for 3-5 minutes, observe whether there is abnormal noise, vibration, and synchronous action of the oil cylinder/cylinder; Confirm that there are no errors before feeding for production.

01 August-2026

Electric arc furnace (metallurgical steelmaking, mineral thermal smelting)

Principle: A high-temperature arc is generated between the graphite electrode and the furnace charge, with a temperature of over 3000 ℃. Three phase steelmaking electric arc furnace: scrap steel smelting, special steel smelting, tonnage ranging from 1 ton to 100 tons Vacuum consumable arc furnace: rare metals such as titanium, zirconium, tungsten and molybdenum, high-purity alloys Mineral arc furnace (resistance electric arc furnace): reduction smelting of ferrosilicon, calcium carbide, and non-ferrous metal ores Features: Ultra high power, high melting efficiency, core equipment for heavy industry smelting.

15 July-2026

Composition of complete set of electric furnace equipment (complete configuration)

Furnace body host: furnace shell, refractory insulation lining, heating element, furnace door, trolley/lifting mechanism, water cooling system Power supply and transformation system: electric furnace transformer, intermediate frequency power supply, rectifier, compensation capacitor Temperature control system: temperature control instruments PLC、 Thermocouples, human-machine interface, over temperature protection Supporting facilities Atmosphere system: nitrogen, hydrogen, ammonia protection gas path Vacuum unit: vacuum pump, vacuum valve (dedicated for vacuum furnaces) Cooling system: circulating water cooler, water-cooled cable Mechanical auxiliary equipment: feeding and unloading trolley, push plate, quenching oil tank/water tank

15 July-2026

General Basic Maintenance of Rock Wool Production Line Equipment

Safety & Electrical System Check that emergency stops, protective guards, safety interlocks and photoelectric limit switches are intact; blow clean the heat dissipation filter screens of control cabinets to remove accumulated wool and dust; ensure cables and wiring terminals have no overheating or damaged insulation; pressure gauges and temperature control instruments shall display normal readings, and alarm functions shall pass effective testing. Lubrication System Verify the oil levels of gearboxes and reducers stay within marked ranges, with no emulsification, blackening or deterioration; clear dust from all grease nipples and inject lubricating grease; replenish high-temperature grease for chains, guide rails and universal drive shafts; high-temperature resistant lithium grease shall be used in high-temperature zones. Cooling / Hydraulic / Pneumatic Systems Ensure cooling water pressure and return water flow meet standards with no pipeline leakage; keep the oil level and oil temperature of the hydraulic station normal and filters unclogged; maintain stable air compressor pressure, drain water from water separators, and ensure no air leakage of pneumatic valves. Transmission & Cleaning Adjust belts and chains to proper tension, free from cracks and missing teeth; clear accumulated wool, mineral slag and dust on equipment surfaces and gaps of roller tables; eliminate risks of blockage caused by solidified melt lumps around furnace mouths and centrifuges.

02 July-2026