Sichuan Zigong Industrial Pump Co.,Ltd

Finish machining

Zigong Pump owns 8 standard industrial workshops,including casting workshop,finish machining workshop,welding workshop and assembly workshop.The whole factory covers which 130,000 m2(32 acres). The design annual output capacity of new factory is 17800 pcs; The maximum capacity of bridge crane is 50 tons; There are 424 sets of large and key equipment in the 8 workshops,which enable Zigong Pump to manufacture various kinds of pumps.

Key machining facilities:

■ Finish machining: 5-meter CNC vertical lathe, 4-meter double-column vertical lathe, CNC boring and milling center, 2.5/1.6/1.25-meter vertical lathe, 8-meter double planer and milling lathe, horizontal CNC lathe, 80 radial drilling lathe...

■ Plate welding: CNC cutting machine, universal reeling machine, welding rod drying box, argon arc welding machine...

■ Assembly: Bearing heater, shaft sleeve/couplings heater, retractable painting house...

Foundry

■ Foundry: 3t/AOD(argon oxygen decarburization)furnace, 0.75t~2.5t medium-frequency induction furnace, 10t/h resin-bonded sand production line of cast steel, 20t/h resin-bonded sand production line of cast iron, 4×3×2.4 m natural gas heat treatment furnace, bench type high temperature resistance furnace, 5t double hook fine/rough polish cleaning machine...

■ AOD(argon oxygen decarburization) process and intelligent control system: AOD is an advanced process of producing extra-low carbon stainless steel and purified high quality alloy steel, with advantages of high efficiency and accurate composition control. The produced products have excellent performance in mechanics and workmanship. The AOD furnace is able to smelt cast steels like 304,316L and other different materials with high carbon ferrochromium alloy and various foundry returns.The smelting loss is less,meanwhile,the electricity consumption can be reduced by 150~200kW/h compared to normal electric furnace.

■ Double hook polish cleaning system: Shot blasting technology is one of the advanced processes of cleaning,hardening,polishing and deburring of the surface of various machines. The system mainly consists of impeller head,anti-abrasion rubber band, lift, separator,feed delivery, dust extracter, electric devices. Non-pit type,less cost and anti-rusting; Double hook design, one hook can work  while another one is loading or unloading outside,which brings high efficiency.

■ Self-hardening resin-bonded sand line: There are two production lines of 10t/h resin-bonded sand of cast steel and 20t/h resin-bonded sand of cast iron, both lines adopt environment friendly sand treatment and wasted sand recycle technology. The dedusting efficiency as high as 99.5%, and the density of discharged dusts lower than 60mg/Nm3. Self-hardenning resin-bonded sands are clean and new type of raw and auxiliary material, obviously,they are advanced compared to the traditional clay sands. The liquidity and collapsibility of self-hardenning resin-bonded sands are excellent, sand mould and sand core don’t have to enter drying stove. The wasted sands can be totally recycled after the dry reclamation, which greatly reduces the energy consumption and improves the sanitary condition and lobor strength in the workshop. The sand mould and core intensity is high after hardened,which improves the dimensional precision of the castings, reduces the finish machining margin. Scrappage is lower compared to the traditional technology.