1、 ENGINEERING STANDARDS Test Procedure LIMITED USE EDS-T-7721 Test Standard Test Method for Determining Carbon Residue of Petroleum Product Do Not Use on New Program; No Replacement. 2Q8T9PE8 8* A2. ?U9I- Note: 8 E:48t G8 =97 FF7 957%L+ , FG P-P Program 72P# 957%L: 6#$ . Copyright 2011 General Motors
2、 Company All Rights Reserved August 2011 Originating Department: GM Korea Engineering Standards Page 1 of 6 Version : 4 1 Scope Note: Nothing in this standard supersedes applicable laws and regulations. Note: In the event of conflict between the Korean and English language, the Korean language shall
3、 take precedence. 1.1 Purpose. This standard specifies the method for the determination of the amount of carbon residue from mineral oil, synthetic oil and similar petroleum product. 1.2 Applicability. This standard applies to measuring content of carbon residue in form of coke through CONRADSON met
4、hod from fuel oil added with amine nitric acid or petroleum products containing a large amount of ash-forming constituents. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ASTM D 524 KS M 2017 KS M 2031 KS M 2620
5、 2.2 GM Standards/Specifications. None 2.3 Additional References. None 3 Resources 3.1 Equipment. 3.1.1 CONRADSON Carbon Residue Tester. The tester shall have a excellent durability and satisfactory appearance, is easy to assemble and meet the following conditions. 1 P7 :0 : ., E:48 6&F !7$ :4-8! 9I
6、8x $4=F 3L 6$ . :0 : F67t 7568 18 88x 7 , F6* 72T8p) F$ . 1.1 +95 . ., E:48t E8T , F2e8T -C 87t 8T1F 2Q8T9PE8 8* A2.8x 9I(F# 4G -7 $4F7 9IF$ . 1.2 957 -88 . G.8x 22eF# ,p:8x $(8p) F8TF# 2Q8T9PE D# :1 6x-08x =4F 7$*8T72P 8* A2.8x COMRADSON -8p) 7A 18 AG 8*,p8 F(8x ?U9IF#$ 957F$ . 2 4) E:4 / :0 : C-H
7、+d%P 9I8 6# F 48 07 38%P E:48x 957F$ . 2.1 17 E:4 / . ASTM D 524 KS M 2017 KS M 2031 KS M 2620 2.2 GM E:4 / . None 2.3 dA E:4 / . None 3 4G 88 3.1 4G 8/x . 3.1.1 CONRADSON 8* A2. ?U9I8? . ! 2e8 6GlF , +68 -H*+ 9*8 3L8F 6x(8 9&8x +94A# 8p) 17F$ . GM KOREA ENGINEERING STANDARDS EDS-T-7721 Copyright 20
8、11 General Motors Company All Rights Reserved August 2011 Page 2 of 6 Version : 4 Figure 1: Carbon Residue Tester ,* 1: 8* A2. 4G 8? 3.1.1.1 Crucible. The one with a capacity of 29 ) 31 ml and a diameter of 46 to 49 ml, made of ceramic or silica shall be used. 3.1.1.2 Large Steel Crucible. Spread 25
9、 ml of dry sand evenly under a large crucible with a diameter of 78 ) 82 mm, a height of 58 ) 60 mm, and a thickness of 0.8 mm, and then put a small steel crucible on it and have its lid close to the mouth of the large one. 3.1.1.1 $4# . 7(8 29 ) 31 ml 8 :*8 46 ) 49 mm 8 +6 -C ?3L8 8d $4# D# 4*? $4#
10、* 17F$ . 3.1.1.2 $4GI I8 $4# . :*8 78 ) 82 mm, “8 58 ) 60 mm, % 0.8 mm 8 ?3L8 +68p) $4# -E7 25 ml 8 * +(* DDF , 887 2GI I8 $4#* “ 8 $4GI I8 $4#8 :0%8 +7 48:$) 8=F$ . GM KOREA ENGINEERING STANDARDS EDS-T-7721 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 3 of 6 Version :
11、4 3.1.1.3 Wire Support. The one made of nichrome wire of about 1.8 mm in diameter and capable of supporting the bottom of the large steel crucible to the same level as that of the lagging body shall be used. 3.1.1.4 Small Steel Crucible. 3.1.1.3 15 -O? . :*8 6 1.8 mm8 #A ) 2T8x 17F $4GI I8 $4# -E8x
12、.(7=8 6x(+0 M8t +8p) -O? 3L 8# 8p) 17F$ . 3.1.1.4 2GI I8 $4# . Capacity (ml) / 7( (ml) 65 ) 82 Internal diameter of flange (mm) / F(: 6|:* (mm) 53 ) 57 External diameter of flange (mm) / F(: -H:* (mm) 60 ) 67 Height (mm) / “8 (mm) 37 ) 39 External diameter of bottom (mm) / -E8 -H:* (mm) 30 ) 32 Diam
13、eter of horizontal bulb (mm) / 3LD 8 :* (mm) About 6.5 / 6 6.5 3.1.1.5 Hood. A cylindrical one made of thin steel plate, having a bridge consisting of wire or nichrome wire of about 3 mm in diameter at the top, and a height of 50 mm shall be used. Its dimensions shall be as follows. 3.1.1.5 7$B . 68
14、t =DD8p) +& 8B8p) 8K .8 :*8 6 3 mm8 =2T D# #A ) 2T8p) +& “8 50 mm 8 /*:) 6x(8 ?3L7t % 8F 8p) 17F$ . Unit: mm / $88 : mm Top of the hood / 7$B 8K. Diameter / :* 50 ) 56 Height / “8 50 ) 60 Bottom of the hood / 7$B 6x(. Diameter / :* 120 ) 130 Height / “8 50 ) 53 Distance from top to bottom / 7$B8 887
15、2P 6x(:8 * 125 ) 130 3.1.1.6 Lagging Body. A void box constructed of blocks of fire resistant material or metal shall be used. Should a cylindrical type be used, the diameter shall be 150 ) 170 mm. If an angular type is used, select the one with edges of 150 ) 170 mm. A void cone type with a height
16、of 32 ) 38 mm, a diameter of 83 mm under the center, and a diameter of 89 mm at the top shall be used. 3.1.1.7 Burner. A Meker burner with a height of 155 mm and a diameter of 24 mm shall be used. 3.1.1.6 .(7= . !G,p) +& /H) D# 8 +8x +& 8x 17F$ . 3.1.1.7 -6“%L$) 47(8x 99(8 175 ml 7 8*+ 47(8x :E:F 8T
17、(8 180 ml 4 %T &: -?F$ . 4.1.6 8& 89IF 8T 2$4 66: 68x 7 F(3A :DD8 +8 :*8 70 mm 8 8x 17F$ . 4.1.7 4G d8 :4/x# 15$4 887 15 -O?8x “ , 887 .(7=* 8=F$ . DF , 887 $4G8 I8 $4#* “8t $8 6 25 ml8 9 +(* $4#8 -H$7 DDF “8t G7 2GI I8 $4#* “#$ . 4.2 8-L 9 . 4.2.1 4G 9 . .,E:48p).Bd-6!#7 1F8t $-188 F8F6 F+ , 4)$+ ,
18、 4G 2e952P , .(2P&%7$+d%L66F$ . 4.3 4G - . 4.3.1 8d Gm8t 4*? $4#* -,* 47(F7 89IF ,h4 %L$) F$ . 4.3.2 $4# !7 :*8 6 2.5 mm 8 8T* 2P* “W 0.1 mg: ,h* ?(F$ . 4.3.3 6x(8 E7 &d( 4* =x?F$ . Expected carbon residue (wt%) / 7) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 4 AUG 2011 Apply new Engineering Standard Template. Limited use with no replacement (Polymer / Organic Material Lab Team) / 4 d3TE:4 64 957 . F9I957 ($4=E:4 68 ) =* (G)8*4G D4 )
