Original
By certification 
Baby armrest chair mould | |
Mold Size |
1000x850mm / advice choose 880Ton injection machine |
Mold cavity |
single cavity |
Mold Steel |
P20 forging steel, the original hardness is HRC25-28 degree |
Mold steel treatment way |
At final arranged hardness treatment for the core and cavity plates to HRC32 degree |
Mold gate way |
Cold runner |
Mold uselife |
300000 shots |
Mold cycle time |
48 sec |
1st. Test mold time |
70 days after confirmed mold drawing files |
Mold doff way |
Ejectors |
Package |
PET film covered then packing into standard wooden case |
How you make the parting line finishing is good, if there will is any sharp edges?
Sharp edge on the chair is dangerous, in order to avoid the sharp edge, we have to do many points during the chair mould manufacturing.
- chair mould parting design is correct or not.
- the chair mould cavity and core thickness is enough or not.
- how you make the CNC milling the cavity and core?
One stage finishing or several stage finishing?
Normally, we need 3 stages finishing. From rough milling to steel hardened, after hardening, take the 2nd stage milling, we call it half precise milling, normally we leave 0.3mm-0.5mm, Then make the steel stress releasing, after this we do final precise milling. When in this time, the machining operation is very important. 1. we have to use cooling on the milling area. 2. we have to be sure that each cutting, the depth will not too big. All these are because of the steel will be deformed when milling and after the hardening. The deforming will cause the cavity and core's fitting are not accurate, there will be a lot of hand works on it. By hand works on the parting area, you can never work out a perfect parting line.
Process | |
Mold steel |
P20, 718, 2738, 2344, 2316, S136, 3Cr13, 38CrMoAl, Mov and more |
Mold cavity |
1 or more (depend on client) |
Surface treatments |
electroplate (in order to prevent rust), thur. nitrogen (in order to rise surface hardness), vacuum quenching (in order to rise whole hardness) |
Plastic materials |
PP, PVC, PPR, ABS, PA, PC, POM, PS, PET, HDPE, LDPE and other |
Software |
UG, PRO-E, MOLDFLOW, CAD, CAE, VISI |
Mold gate way |
cold runner/hot runner/semi-hot runner |
Mold base |
HASCO, DME, LKM, HOME-MADE |
Mold doff system |
ejectors, off-plate, air valves, hydraulic jars, air jars, air ejectors, oil-motor and more |
Mold cooling |
Water cooling/air cooling/beryllium bronze cooling |
Mold payment |
50% down payment by T/T, 50% balance by T/T before shipment |
Mold shipment |
By sea/air/train |
Mold packaging |
packed into standard wooden cases |
Mold quotation |
most reasonable as rich experience |
Technology
1) Mould structure design
Professional designers provide you with reasonably designed mould to shorten cycle hours.
Reducing unnecessary procedure improves efficiency.
2) Mould cooling system
According to the structural characteristics of the product and the appearance of the product , We design a reasonable form of gate for mould, such as a large gate, hidden gate, fan gate, needle gate, pin point gate etc., a reasonable channel of runner design make mold temperature balance in the shortest time to improve mould precision and productivity.
3) Accessory for mould
Slide, guide pin, guide sleeve, lifter blocks and so on are taken by wear-resistant standard parts, to ensure the mould life.
4) Deal with mould
Quenching the mold, heat treatment to improve the hardness, then Nitriding temperature is lower , the mold will no longer need to quench mold with high surface hardness and wear resistance more than HV850
Service
1) We can repair the mould in one year for some free and provide technology. .
2) Gurantee period is 12months starting from the date of moulds accept in the Buyer’s factory.
3) If the moulds happen the big problem, The moulds cannot repaired, the Buyer cannot solve the problems,eg, mould crack, product can’t moulding…any big problem(except the human error) due to the mould life can’t reach to guranteed shots.the Seller and Buyer's negotiate to slove the problem, the buyer can send it back to the factory to repair or If serious, the Seller have resposiblity to make new mould for the Buyer.
