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2025-08-16

Jiangsu Hamonis Electromechanical Technology Co., Ltd-Castings Product Paint Production Line Project Completion Environmental Protection Acceptance Public Notice

Castings Product Paint Production Line Project Completion Environmental Protection Acceptance Public Notice

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Jiangsu Hamonis Electromechanical Technology Co., Ltd-Castings Product Paint Production Line Project Completion Environmental Protection Acceptance Public Notice
Announcement of Environmental Protection Acceptance for Completion of Hardware Machinery Casting Project and Machinery Casting and Plant Reconstruction and Expansion Project

2020-10-29

Announcement of Environmental Protection Acceptance for Completion of Hardware Machinery Casting Project and Machinery Casting and Plant Reconstruction and Expansion Project

Quality Inspection of Cast Iron Platform

2020-10-29

Quality Inspection of Cast Iron Platform

1. The working surface of the cast iron platform shall be free of rust, scratches, bruises and other appearance defects affecting the use. 2. There should be no casting defects such as sand holes, pores, cracks, slag inclusion and shrinkage on the working surface. All kinds of casting surface should be cleared of sand, and the surface is smooth, paint firm. The edges shall be blunt. On the flat working surface with accuracy grade lower than "00", the sand hole with diameter less than 15mm is allowed to be blocked with the same material, and its hardness should be lower than that of the surrounding material. In the work surface of the site should not be more than four, the distance between them should not be less than 80mm. 3. Threaded holes or cylindrical holes for installing lifting facilities such as handles and lifting rings shall be provided on the two opposite sides. The lifting position shall be designed to minimize the changes caused by lifting. 4. According to user requirements, after setting threaded holes or grooves on the working surface of the board, these parts should not be raised higher than the working surface. 5, should be made of high-quality gray cast iron or alloy cast iron. 6. The hardness of the working surface should be HB170-220. 7, the working surface should adopt scraping process, for the "3" level flat working surface can also use planing process, planing the surface roughness of the working surface according to the profile arithmetic average deviation Ra value should not be greater than 5um 8, should be after stability treatment and demagnetization. Flatness: can be divided into laboratory level (Reference), calibration level (Master), tool room level (Working) three levels of plane grinding: cast iron platform in a very early time, people use three platforms to match each other to produce a true plane. A skilled and patient grindstone master can make many 90-degree rotations without any measuring instruments, but only by matching the three platforms with each other, to produce an unbelievable degree of true flatness.

Inspection standard for cast iron platform

2020-10-29

Inspection standard for cast iron platform

Level 0 and level 1 flat platform shall not be less than 25 points within the range of 25 ㎜ square on each side. The level 2 flat platform shall not be less than 20 points within the range of 25mm square on each side. The level 3 flat platform shall not be less than 12 points within the range of 25mm square on each side. The working surface of the cast iron platform shall be free of rust, scratches, bumps and other appearance defects affecting the use. The working surface shall be free of casting defects such as sand holes, pores, cracks, slag inclusion and shrinkage. All kinds of casting surface should be cleared of sand, and the surface is smooth, paint firm. The edges shall be blunt. Cast iron platform on the platform working surface with accuracy grade lower than "00"

Material technology and use of marble square box

2020-10-29

Material technology and use of marble square box

The marble square box is made of Jinan green, granite with black luster, precise structure, uniform texture, good stability, high strength and high hardness. The working surface adopts scraping or precision grinding process to measure the straightness and verticality of the workpiece and equipment installation. The marble square box is used to detect the flatness and verticality of parts, workpieces, machine tool worktables, guide rails and precision work. It has the advantages of high precision, no rust, acid and alkali resistance, no magnetization, no change, good wear resistance, etc. It can remain stable under heavy load and general temperature. The marble box is a precision reference measuring tool made of natural stone material. The granite material selected by strict physical test and selection has fine crystal and hard texture. It is an ideal reference plane for the inspection of instruments, precision tools and mechanical parts. The marble square box is superior to the precision measurement reference parts made of high-quality cast iron and steel, and can obtain high and stable accuracy. Even if it is bumped by heavy objects during use, at most a few grains of ballast will be dropped.

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Jiangsu Hamonis Electromechanical Technology Co., Ltd

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