Cast iron T-groove platform

The cast iron T-groove platform is used as a benchmark for the assembly,debugging,welding,and riveting of power machinery equipment.Mechanical equipment can be fixed.The specifications can be manufactured according to user needs.

Precision of cast iron T-groove platform:According to the standard metrological verification regulation JJG117-91,it is classified as level 3 and precision planing.

Surface treatment of cast iron T-shaped groove platform:The working surface adopts scraping and grinding technology,and is inspected by color coating method to improve the flatness accuracy.The working surface generally has T-shaped grooves,and can also be processed with long or circular holes according to requirements.

The production process of cast iron T-groove platform:

After the completion of pouring,the cast iron T-shaped groove platform starts to use vibration sand cleaning and manual sand removal to clean the waste around the cast iron platform blank.After the sand cleaning is completed,the casting naturally cools down and begins secondary tempering(aging treatment).The casting is heated to 780°C in the tempering kiln and can only be discharged from the kiln when the temperature of the kiln type and kiln is reduced to 50°C.When rough machining the castings of the cast iron platform,Jinan's gantry planer and cross section milling machine are used to make the four sides and upper and lower parts of the cast iron platform square or rectangular.If a T-shaped groove is needed,it can only be machined by leaving it for one day after the plane is planed,such as U-shaped groove,rectangular groove,etc.If the customer requires high precision and high smoothness,they can use our own Kunming Machine Tool Factory's 6000*3000 CNC gantry milling machine for precision machining after rough machining.The precision straightness and flatness of the CNC gantry milling machine after machining have an error of 0.008mm per meter,and the smoothness can be controlled within 1.2.After manual polishing,the smoothness can reach up to 0.8.If drilling or threading holes on a cast iron platform can also be completed in one go using a CNC gantry milling machine,with high smoothness.

Technical requirements for cast iron T-groove platform:

1.The use of scraping technology should undergo color comparison inspection.The ratio of the contact point area displayed after research is specified in Table 3,or the number of contact points in a 25mm x 25mm square area is specified in Table 3,and the number of contact points between any 25mm x 25mm should not exceed 5.

2.The cast iron T-groove platform should be made of fine gray cast iron or alloy materials,and its working surface hardness should be 170-220HB.

3.On a flat working surface with accuracy registered as level 0-3,sand holes with a diameter less than 15mm are allowed to be blocked with the same material,and their hardness should be less than that of the surrounding materials.There should be no more than 4 sand holes blocked in the working face,and the spacing between the sand holes should not be less than 80mm.

4.The casting surface of the cast iron T-groove platform should be sandblasted and flat,and painted firmly.

5.There must be no defects such as sand holes,pores,cracks,slag inclusions,shrinkage,scratches,bumps,rust spots,etc.that seriously affect the appearance and performance.

6.The flatness tolerance of the working surface of the cast iron T-groove platform is specified in Table 2.

7.Scraping process should usually be used.The maximum allowable value of surface roughness Ra for a level 3 flat working surface processed by scraping is 5um.

Instructions for using cast iron T-groove platform:

1.Before use,use non corrosive gasoline,wash the working surface with rust proof oil,and wipe it clean with degreased cotton yarn before use.

2.Temperature changes can cause measurement errors and should be used within the range of 20±5℃.

3.Use a spirit level to adjust to the horizontal position,so that the fulcrums are evenly distributed on each fulcrum.

4.Be careful and avoid collisions when using.

5.After use,wipe clean,apply anhydrous and acidic rust proof oil,cover with paper,and store in a clean and dry place.

6.Weekly inspection period:The long weekly inspection period is one year.

Technical parameters of cast iron T-groove platform:

The specifications of cast iron T-shaped groove platforms(mm):1000 x 1000 x 170,1000 x 1200 x 190,1000 x 1500 x 200,1000 x 2000 x 200,1500 x 2000 x 230,1500 x 3000 x 260,2000 x 3000 x 260,2000 x 4000 x 280,2000 x 5000 x 300,2500 x 5000 x 300,2500 x 6000 x 300,3000 x 6000 x 350,3000 x 7000 x 400,3000 x 8000 x 400.