hard chromed piston rod

1.material:ck45,st52,20MnV6,42CrMo4,40Cr 2.ground and chrome plated 3.advanced inspection apparatus 4.ISO9001:2008

  

Detailed Description

Our company specialized in hydraulic piston rod, cylinder rod ,long small diameter axes, hollow bar ,induction hardened rod.All technical parameters of our products comply with even superior tp state standards.Our products can be directly used in oil cylinder and air cylinder. In addition ,our products are widely used for textile & dyeing ,mechanical slide guide of printing machine,guide rod of injection machine and guide post of four-post hydraulic press.

1. MATERIAL

     45C8,IS1570,

2. CHEMICAL COMPOSITION(%)

C	Mn	Si	S	P
0.40-0.50	0.60-0.90	0.035	0.035	0.035

3. MECHANICAL PROPERTIES

T.S	Y.S	E%(MIN)	CHARPY	CONDITION
630N/MM2	340N/MM2	15	-	NORMALISED

4. SUPPLY CONDITION

    Ground  and  chrome plated 

5. CHROME THICKNESS

     20 to 30 micron

6. SURFACE ROUGHNESS

     Ra≤0.2 micron and  Rt≤2 micro

7. TOLERANCES ON DIA

    ISO f7 on the diameter

8.OVALITY

Half of the tolerance ISO f7

9. STRAIGHTNESS

   ≤0.2MM/M

10 SURFACE HARDNESS

   850-1150HV (vickers 100g)

11COHESION

   No craks,breaking or detaching after thermic shock(warming up at 300 celsius degrees and cooling in water)

12 .POROSITY

     Test according to ISO 1456/1458 and result yaluation according to ISO 4540 rating 8-10

13 CORROSION RESISTANCE

     Test in natural salt spray according to ASTM B 117-72hours

     Results evaluation according to ISO 4540 RATING 7-10

14. WELDABILITY

      Good

15. PACKING

     Anti rust oil to be applied on material and each rod to be packed in paper sleeve

16. CERTIFICATE

     All certificate related with material heat treatment and plating is required

hard chromed piston rod