Cast iron platform included

Material: cast iron plate using HT200-300 casting, material ingredients ingredients and ingredients according to the following criteria (%): carbon: 3.1-3.4, manganese: 0.6-0.9, silicon: 1.5-2.0, sulfur <0.12, phosphorus < 0.3. Hardness> 180, the second tempering treatment.

Cast iron platform technical requirements:

1, the platform must be subject to two back stress stress aging treatment, to prevent the deformation of stress memory distortion and the future use of the platform into the phenomenon of cracks in the occurrence of the elimination of casting stress, the purpose of rough stress, stress relief of 90%

2, the end of the working face after the acute blunt;

3, the casting surface to be processed without external force, polished, the inner surface are required to paint anti-rust paint;

4, flat face can not seriously affect the appearance and performance of sand holes, pores, cracks, slag, shrinkage, scratches, bumps, rust and other defects.

3, the accuracy grade 0 ~ 3 flat working surface, the diameter of less than 15mm of sand holes allow the same material blockage, the hardness should be less than the hardness of the same material.Faceface blocked sand holes should not be more than 4 And the distance between the sand holes should not be less than 80mm.

4, the plate should be high-quality fine gray cast iron or alloy cast iron and other materials, the face hardness should be 170 ~ 220HB.

5, the flat face is usually applied to use scraping process.For scraping the three-stage flat working face, the surface roughness Ra of the maximum allowable value of 5чm.

7, the flat face with the scraping process should be carried out on the color of the test. The proportion of contact area after the inquiry shown in Table 3, or 25mm × 25mm in the number of points of contact should not be greater than 5 points Controversial, according to the ratio of contact area for the assessment basis.

8, the plate relative to the two sides, should be installed handle or ring device screw hole (or cylindrical hole), and the device location should be designed to minimize the deformation caused by handling.

9, if the flat working surface set screw hole (or groove), the site should not be higher than the face.

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2. About size GB standard gauges I have a spot with the director, received orders, 72 hours of delivery; non-standard measuring tool can be customized, the production period is short, please rest assured to buy.

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5. On the delivery Products for the wooden box packaging, non-customized products, a single 50kg the following products made ordinary courier, generally within 72 hours of arrival; more than 50kg single product logistics and distribution, your city has a direct line of priority, remote or small towns are Freight logistics Peihuo, the general arrival time of 4-7 days. Shipping costs to the logistics company's actual offer shall prevail, the shops sold goods prices are not including transportation costs. If you require special express, air and rail express to be self shipping fee.