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我有一份某单位招聘橡胶配方工程师和工艺工程师的试卷,请大家做做,看看你能得多少分,这个试卷对想要招聘的个人和单位也许有帮助(免费)
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6 h/ |8 ]* o7 S配方师面试技术考核/ R! H6 ?8 f$ V K" ~: `# I$ N
Chemist Interview Evaluation Test8 {3 [# B6 y+ {5 D6 b& C5 }0 V
4 M+ q% W+ q N& ^姓名Name: 出生年月 Birth Date: 7 J( `' M* _3 R# t0 v4 w, M
/ K. r7 w7 F5 \' t现任职位 Position: 联系电话 Phone No.:
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日期Date:
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备注Note;3 g+ m9 k4 V" p% n
1-如果需要,可加附页You may attach additional sheet as necessary
/ m8 P9 C( ^1 f: i3 r* X7 _3 j2-如果需要,可做必要的假设 Please make necessary assumptions to answer the questions. , e! e0 i6 N# ]9 r. [3 _
1. 请根据提供的资料,设计一个满足要求的配方Please develop a compound recipe that will meet all the following physical property requirements.
4 {) X1 A r8 e6 F5 {% \- V3 F, \3 {ASTM Specification SAE J200 M4AA717A13B13C12F17# {5 j M1 T% b! o! `1 y
Additional Information Natural rubber4 G) }3 o/ v% }! B
Test Item Test method Unit Specification
% W9 \* t* D, f! \Hardness ,Shore A ASTM D2240 70±5
/ x' Q- e/ t. ~: L' qTensile ASTM D412 MPa ≥17* i q- ?( i5 l7 p' t) E5 ], p
Elongation ASTM D412 % ≥300
* D: R* P* Z) x; \. [8 \" sTear Strength,Die C ASTM D624, KN/m /
# S- f0 O/ B% h# \Heat resistance,70 h at 70℃ ASTM D573 # L6 A! g" F' @- ^7 p3 t5 [
Change in hardness, MAX points +103 w$ P6 o( w# F/ r* z$ w. h/ T
Change in tensile strength, MAX % -259 m- J! ?7 h! W, Y
Change in ulimate elongation, MAX % -25
8 y3 x& J' w* X5 o' g9 iCompression Set(70℃x22h) ASTM D395 Method B % ≤258 x8 b8 F# q$ z) p7 C
Resistance to Ozone ASTM D1171 . b1 @. Y) S, K, F$ f( a
Quality Retention Rating, min, Method B % 85
7 u7 G/ Y5 L, s" o, ]8 C7 y* y& gLow -temperature resistance, ASTM D2137,
3 f9 F) h4 N1 {8 u2 t2 S6 c% GNonbrittle after 3 min at -40℃ Method A pass8 n4 ^5 T1 E/ _; g) r
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Recipe配方:) s$ G0 W: S8 D2 W* w
Item No. Ingredient PHR( y9 k$ D/ p- U
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2 m# q, l c3 f/ _: ]) U+ s2. Please develop a recipe based on the following application requirement.请根据以下顾客要求,设计一个合理的配方。
5 `8 }; }- Y+ T) V顾客要求:抗静电,丁苯胶,黑色,60度(Low Static, SBR, Black, 60 shore A)2 g1 e l5 O# [- ^
配方Recipe:3 w% t9 o2 l" c% Q2 o- e
Item No. Ingredient PHR
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) ]% H; J" w! l8 u9 `3. 我们有一个NBR配方和顾客要求如下,请判断该配方是否能够满足顾客要求,如果不能,请修改配方Please tell if the following recipe can meet the customer’s requirements,if not, please modify the recipe to meet the specification requirements.
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( Z% t3 Y+ [3 V, V& e' j原始配方Original Recipe 改进配方Improved Recipe4 [* G) d6 L" h9 C4 E' E
Item No. Ingredients PHR (180.3)
, X& M5 ?. }; u% Q1 q: d: Q' c& S1 230S NBR 100
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4 Zinc Oxide 5 % T* R) O5 ?* d$ \# _: H% {3 l% h
5 Stearic Acid 1
9 B! ~+ V+ M% t6 d$ i+ Q% o8 h6 w6 Paraffin Wax 1 - X j& u& U s+ P. t
7 N330 23
- m; _; H ~) {. X% \8 N770 40
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# J) i+ [- ^5 ?+ V7 z10 TMTM 0.3 & m) M! K- _# n L2 x7 L0 p
11 CBS 1.5
' I( F( k4 _/ F8 l1 l% Y12 Sulfur 1.5 . t$ ~3 J9 J* n1 O- \; Z
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顾客的要求如下Customer’s requirements is as follows:
! U$ t2 {/ r8 b+ q4 DTest Item Test method Unit Specification
) U, v5 h9 r: QHardness ,Shore A ASTM D2240 70±5 . f" B# B/ e) c l
Tensile Strength, ASTM D412 MPa ≥14
0 X& r: S- e) k6 Q" v# lElongation ASTM D412 % ≥250
* n. W# `' @% t: A, } L9 s5 RTear Strength,Die C ASTM D624, KN/m /
- D% S6 }2 ?* w" YHeat resistance,70 h at 125℃ ASTM D865
d* N2 a, {- B- e" W# [Change in hardness, MAX points 0~+15: k! F! H J4 ]' o, d
Change in tensile strength, MAX % -25( X( O' H& w9 U2 T
Change in elongation, MAX % -50
; b* F7 h. ]) ?1 C, c) LCompression Set(150℃x22h) ,ASTM D395 Method B % ≤30; o' F5 l$ Z% {9 R8 j# |8 ^
Fluid resistance,No.IRM903 Oil,150℃,70 HOURS ASTM D471
+ H, W' J& a: r# BChange in hardness, ASTM D2240 Point -10, I* x5 N/ ]2 C# u Q8 U& Q
Change in tensile strength, MAX ASTM D412 % -352 w" u- e; t% Y6 U# u& U
Change in elongation, MAX ASTM D412 % -35: @ N1 |, }: Z- ]- G" F8 @' u
Volume change ASTM D471 % -0~25
! i' y0 j( j. b9 [& \% ^: zLow temperature TR-10Max ASTM D1329-02 ℃ -20
& |) F) S+ N1 @0 v) _Low temperature -35℃@5hrs.180。 No cracks
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4. 下面是一个EPDM配方,在硫化后出模时,制品容易撕裂且不易脱模,如何改进?The parts is easy to tear and difficult to be removed after molding, please solve the problems by modifying the recipe provided.
2 D1 g" ]8 P' v4 t! ]7 V8 a4 x; T原始配方Original Recipe 改进配方Improved Recipe+ f8 D" B$ v d/ O$ Y3 h G$ h U3 V
Item No. Ingredients PHR (238) 9 z3 o5 b! |) K* |# `# R3 s
1 EPDM4045 100
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! K- L( N$ |1 p. Q0 w6 P$ Q3 Zinc Oxide 5
" Q* x8 F3 B- Z% F# X0 I6 X" T! e4 Stearic Acid 0.5 w% k n a: M$ W! w# J
5 N770 80 9 m. v0 ?7 k/ R0 y7 K y
6 2280 5
3 x/ z+ Q `/ r1 |7 TAIC 1.5 ! a- p+ I! B, S* B& g/ q& B
8 DCP 6 % _+ X# V& l8 r6 q% \
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5.为了保证配方价格合理而且满足物性,重复性和工艺要求,请列出合理的配方开发步骤.Please list the compound development procedure to ensure the compound cost is reasonable and the compound meet all physical properties, repeatability and processing requirements.
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工艺设计师面试技术考核
3 C( D, H/ |- N; \2 M) ?Processing Engineer Evaluation Test
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* ]$ }2 \9 D# p- ~' \( B姓名Name: 出生年月 Birth Date: 3 ^. H$ m/ v, U: d5 Q. w; J
5 h- M, S7 u2 f4 i" ]1 g* O现任职位 Position: 联系电话 Phone No.: 7 X' z1 @8 T/ I" [
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日期Date:
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% ]! ]0 A0 E- |- @备注Note;
; [: x! Y V0 q: Q1 E* f( S* F1-如果需要,可加附页You may attach additional sheet as necessary
( _( Q. z3 k# R: t4 `9 a2-如果需要,可做必要的假设 Please make necessary assumptions to answer the questions.
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3 h6 q, J: C4 ]( m1)你以前用过哪几种压机,说明压机的特性和能力. What type of presses have you used in the past; describe the specific features / capabilities.
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/ J, s2 w- p6 o# ~5 c% t: r" ^9 F2)工艺工程师应如何参与新模具的设计和加工?新模具进厂后如何建立稳定的生产工艺? How do the process engineer participate the design and manufacturing of the tool? How to set up the stable process with new tools.
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3)请画一个草图举例说明你以前是如何通过修改模具改善成型工艺的.Please draw a simple sketch of a tool revision where you made a suggestion to make the molding process better?
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4)作为一个工艺工程师,请提出一个新模具预防性维护的方案As a process engineer, what are your recommendations for developing a solid preventive maintenance program on new tools?- c g7 @) `5 ]9 T8 _# m& A$ l, }
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- }9 O. M+ t2 _' o& O5 `1 x& D z! }5)请列出解决下列生产问题的步骤和方法Describe your process for trouble shooting the following production problems:! @- z! g [. U' G* f
a) Non-fill缺料
- z0 j: i& z9 v% r- [. ]b) Porosity气孔,海绵状
+ A: _* x, V9 W# t, Oc) Blister包风或窝气" B0 w' [* V; Z0 J' v$ O/ i/ W u
d) Back-grind焦边! F9 M; r" F% G# X. Q5 g/ _
e) Split裂缝
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4 w; M' k0 U% ]' o8 E D1 |6)请详细说明如何解决胶料在压模中流动不好的问题Explain step by step how you would go about solving a material problem on the factory floor when the compound is not flowing well in a compression tool?
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7)请说明你曾经做过的车间规划布局,请说明你在车间布局方面主要做了哪些工作,结果如何Describe a work cell environment you created; please explain your specific involvement and document the results.7 b' M1 T0 l+ s, v; F4 a, L
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# f. S3 X! Y" E. H8)常用的修边方法有几种?各种修边方法适用于哪几种场合?请对每种修边方法给出一个实例。What trimming methods are there? What application for each trimming method? Please give some examples for each trimming method.: g# W0 c% G9 H. p
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9)请介绍一下硫化曲线MDR,说明如何用硫化曲线确定初始工艺或者调工艺,请举例说明.Explain a MDR curve and how it can benefit you when starting up a new or existing process? Please be detailed and give specific examples.( O3 l8 ^* r- Q& y4 ]) v: ~3 W9 @
并说明如何应用硫化曲线提高生产效率?' ?0 n F" r# ?1 v8 l* J e
And explain how to increase the efficiency of the molding by the curing curve., X9 l; T2 r* M! @- L6 Z
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10)根据模具结构分,产品尺寸包括哪几类?多腔模具产品尺寸出现不合格,如何分析解决?What kinds of dimensions of the parts are divided into according to the tool configure? How to analyze and resolve the dimension problems for the tool with many cavities?3 Z* a2 B& v c8 h4 s$ O& j
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11) 金属和橡胶粘合的基本原理是什么?如何分析解决生产中出现的脱胶问题?! t6 y3 K% ~2 v) z( ^" A
What is the principle of the adhensive between the insert and compound? How to solve the separation between the insert and compound?
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U. l' {5 F0 W7 r7 F! t12)假如有一个新产品需要做生产准备,计划产量每年600万件,模具64腔,尺寸600*600,硫化温度是180度,硫化时间300秒,采用工具自动装料和自动脱模的工艺生产,硫化设备采用抽真空350T平板硫化机,请按照APQP要求做一个完整的生产准备计划。. Q8 o n: W% H4 Y0 g+ M
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1 _" f- @ \ c! S13)有一个产品(A18989-01)的模具结构如图所示,硫化体系采用过氧化物硫化体系,硫化温度是180度,时间300秒,手工脱模,脱模时在点A处产品容易撕裂,请分析一下产生撕裂的原因,并提出改进方案。
, a# ?' v; @/ s9 t0 }8 l$ uThe tool configure (18989-01) of a part is as following ,the curing agent is peroxide, the parts are easily torn at the corner(A), please analyze the potential reasons and give your improvement plan |
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